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1.
谢静  余红艳  冯正直  杨国愉  蒋娟 《生物磁学》2011,(11):2163-2167,2200
目的:探讨陆军青年军人心理素质与人格、心理健康的关系。方法:整群抽取陆军青年官兵881名,采用军人心理素质量袁、艾森克人格问卷(EPQ)、症状自评量表(SCL-90)进行测评,进行方差分析和相关分析。结果:(1)陆军青年军人心理素质各因子分及总分与EPQ人格问卷中的E分呈显著正相关(p〈0.01);与N分、P分呈显著负相关(p〈0.01)。高、中、低心理素质水平军人E、P、N得分比较有显著差异(p〈0.05),表现为在E量表得分上高心理素质组〉中等心理素质组〉低心理素质组;而在P、N量表得分上则反之。(2)陆军青年军人心理素质各因子分及总分均与SCL-90各因子分和总均分呈显著负相关(p〈0.01)。高、中、低心理素质水平军人SCL-90各因子得分比较有显著差异(p〈0.05),表现为低心理素质组〉中等心理素质组〉高心理素质组。结论:陆军青年军人心理素质与心理健康密切相关,心理素质越高,其心理健康水平也越高。  相似文献   

2.
OBJECTIVE: Early cervical adenocarcinoma (ECA) with a tumour depth of <3 mm has a good prognosis. To clarify the cytological features of ECAs with depth <3 mm, these were compared with those of ECA with 3-5 mm and invasive adenocarcinoma (IA) invading the cervical wall with more than 5 mm in depth. METHODS: The cervical cytological features of ECAs with depth <3 mm (14 cases) were compared with those of ECA with 3-5 mm (four cases) and IA (13 cases). Cytologically, the presence or absence of tumour diathesis, number of atypical cells, crowded cell groups, groups with glandular structures, feathering, groups with palisading borders, rosettes, clusters, cell shape and size, nuclear shape and size, nucleolar shape and size, chromatin distribution, border and character of cytoplasm, and single cell pattern were evaluated. RESULTS: A tumour diathesis was seen in five of 14 ECA <3 mm in depth (36%), all four ECA with 3-5 mm (100%) and 11 of 13 IA with more than 5 mm (85%). Single cells, macronucleoli and coarsely granular chromatin pattern were less frequent in ECA of <3 mm than that in ECA with 3-5 mm and IA. The number of atypical cells and glandular structures in ECA was significantly less than that in IA. Cell crowding, feathering, palisading and rosettes were common in both ECA and IA. CONCLUSION: The characteristic cytological features of ECA with depth <3 mm, having a good prognosis, were clean background, fewer single cells and macronucleoli, and less frequent coarsely granular chromatin pattern compared with those in ECA with 3-5 mm and IA. The number of atypical cells and glandular structures in ECA was significantly less than that in IA. Familiarity with the cytological features of ECA and its mimics is essential.  相似文献   

3.
目的分析人类与部分实验动物的RETN基因同源性,为人类RETN基因相关疾病及基因功能研究对理想实验动物的选择提供依据。方法提取猕猴、大鼠、小鼠和树鼩的脂肪组织总RNA,用相应的RETN引物进行RT-PCR,对其产物进行双向测序;同时在GenBank中查询人类、猪、牛的RETN基因序列;再运用ORF Finder软件调取其ORF核苷酸序列和氨基酸序列,用DANMAN软件对所获得的序列进行比对,分析其同源性。结果人类RETN的核苷酸序列与猕猴、小鼠、树鼩、大鼠、猪、牛的同源性分别为95.4%、65.4%、65.4%、66.4%、81.0%、81.0%;氨基酸序列分别为91.7%、55.6%、55.6%、53.7%、75.9%、72.2%。;系统进化树结果表明,就RETN基因而言,人与猕猴的亲缘关系较近。结论基于同源性分析结果,在RETN的进化上猕猴与人类存在较近的亲缘关系,是研究人类RETN生物学功能及其相关疾病的最佳实验动物。  相似文献   

4.
Philip P  Rogers C  Kruger E  Tennant M 《Gerodontology》2012,29(2):e306-e311
doi: 10.1111/j.1741‐2358.2011.00472.x
Oral hygiene care status of elderly with dementia and in residential aged care facilities Objective: To explore the effectiveness of oral hygiene care on plaque and gingival status of residents with dementia. Background: Oral hygiene and oral hygiene care has been reported to be poor among the institutionalised elderly with dementia. The severity of oral diseases has been shown to increase with the severity of physical and cognitive impairment related with dementia. Little research has been carried out on plaque and gingival status of elderly with dementia and the impact of disability related with dementia on oral health in residential aged care facilities (RACF). Materials and methods: A cross‐sectional study of 205 elderly residing in RACF in Perth. Results: Forty‐one percent of the residents in RACF had dementia. Sixty percent of the residents with dementia and 75% of the residents with an Activities of Daily Living Oral Health score of D were assisted with oral care. Mean plaques scores and extent of gingival inflammation were higher for residents in the DD and D subgroups and resident with dementia. Residents assisted with brushing had higher mean plaque score and more moderate gingival inflammation. Conclusion: Oral hygiene care status in residents with dementia was poor despite the fact that oral care assistance was being provided.  相似文献   

5.
Human–dog interaction relies to a large extent on nonverbal communication, and it is therefore plausible that human sensitivity to nonverbal signals affects interactions between human and dog. Experience with dogs is also likely to influence human–dog interactions, and it has been suggested that it influences human social skills. The present study investigated possible links between human nonverbal sensitivity, experience with dogs, and the quality of human–dog interactions. Two studies are reported. In study 1, 97 veterinary students took a psychometric test assessing human nonverbal sensitivity and answered a questionnaire on their experience with dogs. The data obtained were then used to investigate the relationship between experience with dogs and sensitivity to human nonverbal communication. The results did not indicate that experience with dogs improves human nonverbal sensitivity. In study 2, 16 students with high, and 15 students with low, levels of human nonverbal sensitivity were selected. Each of the 31 students interacted once with an unknown dog in a greeting situation, and these human–dog interactions were videoed. We found that a combined score of dog behaviors relating to insecurity was associated with the students' level of nonverbal sensitivity and experience with dogs: the dog showed more of the insecure behavior when interacting with students with a low level of nonverbal sensitivity and no experience with dogs than it did when interacting with students with a high level of nonverbal sensitivity (irrespective of experience with dogs).  相似文献   

6.
目的:探讨多层螺旋CT对小儿急性阑尾炎的诊断价值。方法:回顾分析经临床手术病理证实的53例小儿急性阑尾炎的CT表现特点。所有患儿均行多排CT横断面扫描及MPVR重建。结果:53例中,单纯性阑尾炎2例;急性化脓性阑尾炎伴周围炎4例,其中1例合并紫癜;急性化脓性阑尾炎伴穿孔33例,其中1例合并回肠末端美克尔憩室;坏疽性阑尾炎伴穿孔6例;阑尾脓肿8例。CT平扫以及MPVR重建显示阑尾肿大、增粗(直径大于6mm)30例,阑尾内粪石27例,阑尾周围蜂窝织炎23例,阑尾周围脓肿8例,大量腹水6例。结论:多层螺旋CT扫描及重建技术能为小儿阑尾炎的诊断提供有力依据,提高临床术前诊断能力。  相似文献   

7.
Forage quality characteristics of field-grown mixtures of sainfoin with cocksfoot (50:50%), sainfoin with tall fescue (50:50%), and the same with the addition of subterranean clover in their composition (33:33:33%) were measured. Forage biomass from the mixtures of sainfoin with cocksfoot had generally higher forage quality than mixtures with tall fescue. It had higher crude protein content (11.52% of dry matter (with 1.07% units), significantly higher digestibility (61.74%) (with 6.51% units), higher neutral detergent fiber content (53.42%) (with 3.22% units), higher nutritive value (Unité Fourragère Viande – Unité Fourragère Lait, 0.690–0.583) and higher protein feeding value (Total Digestible Protein – Protein digestible dans l’intestine in dependence of nitrogen – Protein digestible dans l’intestine in dependence of energy), 72–70–79 g/kg of dry matter. Forage biomass showed more balanced basic chemical composition after the addition of subterranean clover, i.e.: higher crude protein content (with 0.30% units) and lower crude fiber content (with 0.14% units) for mixtures with cocksfoot; higher digestibility (with 0.29% units) for mixtures with cocksfoot; lower neutral detergent fiber content (with 0.45% units) for mixtures with cocksfoot and with 3.15% units for mixtures with tall fescue, higher energy feeding value (Unité Fourragère Viande – Unité Fourragère Lait) (with 0.007–0.012 for mixtures with cocksfoot and with 0.009–0.014 for mixtures with tall fescue), higher protein feeding value for both mixtures with cocksfoot and tall fescue. Forage biomass from mixtures of sainfoin with cocksfoot and Trifolium subterraneum ssp. brachycalicinum had the highest crude protein (11.89% of dry matter), the lowest crude fiber content (27.07% of dry matter) and the highest digestibility (62.81% of dry matter).  相似文献   

8.
海水处理下菊芋幼苗生理生化特性及磷效应的研究   总被引:10,自引:0,他引:10       下载免费PDF全文
种植抗盐耐海水植物是合理利用和开发海涂资源的有效措施之一。该试验研究了海水处理下菊芋(Helianthus tuberosus)幼苗生长发育、渗透物质积累、保护性酶活性、膜透性和离子吸收分布情况及磷素对其影响。结果表明:1)10%海水对菊芋幼苗生长发育没有抑制作用,甚至有一定的促进作用,25%海水胁迫对菊芋幼苗形态发育上具有一定抑制作用,增加磷素浓度后,能显著缓解其抑制作用;2)10%和25%海水处理下,脯氨酸和可溶性糖含量较对照显著增加,随着时间的延长,先增加后降低,增加磷素浓度后,能显著增加菊芋幼苗叶片脯氨酸和可溶性糖含量;3)海水处理下菊芋幼苗叶片SOD、POD和CAT活性都显著增加,增加磷素浓度后,能显著增强菊芋幼苗叶片SOD、POD和CAT活性;4)10%海水处理菊芋幼苗叶片MDA含量与对照差异不大,甚至小于对照,25%海水处理能显著增加MDA含量及膜透性,增加磷素浓度后,均降低了MDA含量和膜透性;5)随着海水浓度增加和时间延长,菊芋幼苗地上部和根部Na+和Cl-含量显著增加,增加磷素浓度后,均能降低地上部和根部Na+和Cl-含量,而地上部和根部K+、Ca2+和Mg2+含量较对照增加,增加磷素浓度后,均能增加K+、Ca2+和Mg2+含量。由此可见,磷素能够改善菊芋幼苗的营养状况,同时能够增强其抗盐性。  相似文献   

9.
葛雅丽  席贻龙  马杰  许丹丹 《生态学报》2012,32(16):5034-5042
对芜湖市镜湖和汀棠湖中剪形臂尾轮虫(Brachionus forficula)的发生及其形态特征进行了一年的观察,并分析了其与环境因子间的关系。结果表明,镜湖中,剪形臂尾轮虫出现于7月至10月,且仅存在短后棘刺型个体;2样点内,除了前外棘刺长以外,轮虫的其他各形态参数均随季节显著变化,形态参数的样点间差异也因季节的不同而异;轮虫的各形态参数均随pH的升高而延长,随过滤水体中叶绿素a含量和水体中总叶绿素a含量的升高而缩短;体长和体宽均随晶囊轮虫密度的升高而增大。汀棠湖中,短后棘刺型个体出现于6月至10月,而长后棘刺型个体仅出现于6月至8月;2种形态型个体同时存在时,长后棘刺型个体在种群中所占比例始终高于短后棘刺型个体,并与水温、水体中总叶绿素a含量以及枝角类、桡足类和晶囊轮虫的密度均呈显著的正相关;2样点轮虫短后棘刺型个体各形态参数均随季节显著变化;长后棘刺型个体在1号样点内仅前外棘刺和后棘刺长有显著变化,而2号样点内仅体长、体宽和后棘刺长有显著变化;2样点内长后棘刺型个体的体长、体宽以及前外棘刺和后棘刺均显著长于短后棘刺型个体;同一形态型个体形态参数的样点间差异因季节的不同而异;短后棘刺型个体的前外棘刺和后棘刺长均与水体中总叶绿素a含量呈显著的正相关,后者与过滤水体中叶绿素a含量和枝角类密度也呈显著的正相关;长后棘刺型个体的后棘刺长与桡足类密度呈显著正相关,前内棘刺长与水温、溶氧量和晶囊轮虫密度呈显著负相关。两湖泊内剪形臂尾轮虫的后棘刺长和体长之间均呈显著的正相关,提示其后棘刺的延长并不是对体长的异速增长。  相似文献   

10.
长刺萤叶甲属与短鞘萤叶甲属的外部形态扫描电镜观察   总被引:2,自引:0,他引:2  
本文对长刺萤叶甲属和短鞘萤叶甲属的头部,口器,触角,体毛,刻点,前胸背板,鞘翅缘折,足的外部形态首次进行了扫描电镜观察,并对结果进行了分析,比较,发现纬度变化引起的形态变异不显著,而海拔的变化引起形态的适应性变化比较显著。因此,对两种不同海拔的萤叶甲进行形态比较,研究萤叶甲在不同地理环境下,其形态的适应性变化提供了有价值的依据。  相似文献   

11.
《Endocrine practice》2021,27(1):21-26
ObjectiveThere are no data regarding echocardiographic parameters in patients with normocalcemic primary hyperparathyroidism (NCPHPT). We compared the echocardiographic findings in postmenopausal women with NCPHPT with those in patients with hypercalcemic primary hyperparathyroidism (PHPT) and controls.MethodsSeventeen consecutive Caucasian postmenopausal women with NCPHPT were compared with 20 women with hypercalcemic PHPT and 20 controls. Obesity, diabetes, kidney failure, and previous cardiovascular diseases were considered exclusion criteria. Each patient underwent biochemical evaluation, bone mineral density scan, and echocardiographic measurements. Patients with parathyroid disorders underwent kidney ultrasound evaluation.ResultsPatients with PHPT had significantly higher mean total serum calcium, ionized calcium, 24-hour urinary calcium, and parathyroid hormone and lower mean phosphorus levels compared with those in the controls (all P < .05). The only differences between patients with NCPHPT and PHPT were significantly lower mean total serum calcium, ionized calcium, and 24-hour urinary calcium and higher phosphorus levels in patients with NCPHPT (all P < .05). The only biochemical difference between patients with NCPHPT and the controls was a higher level of mean parathyroid hormone in patients with NCPHPT. There were no differences in cardiovascular risk factors between patients with NCPHPT and PHPT and the controls. Hypertension was the most frequent cardiovascular risk factor, diagnosed in 65% of patients with PHPT. This high prevalence was not statistically significant compared with that observed in patients with NCPHPT (59%) and in the controls (30%). Echocardiography parameters were not different between patients with NCPHPT and PHPT and the controls when subdivided according to the presence of hypertension (ANOVA followed by Bonferroni correction).ConclusionIn a population with a low cardiovascular risk, we found no differences in cardiovascular risk factors and echocardiographic parameters between patients with NCPHPT and PHPT and the controls.  相似文献   

12.
The interactions of carbonmonoxyhemoglobin (HbCO), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and polyhistidine with phospholipid monolayers at the air-water interface were studied at physiological pH and ionic strength. HbCO and GAPDH both interact more strongly with monolayers containing negatively charged lipids. The interaction of HbCO and GAPDH with lipid monolayers decreases with increasing pH. Both the HbCO-monolayer and the GAPDH-monolayer interactions can be modeled as diffusion-limited processes, with kinetic data fit to a stretched exponential equation. The significance of these kinetics are discussed. Polyhistidine interacts only with monolayers containing lipids with negatively charged headgroups. In total, the results presented are consistent with an HbCO-lipid interaction with a large electrostatic component, a GAPDH-lipid interaction with comparable electrostatic and hydrophobic components, and a polyhistidine-lipid interaction that is solely electrostatic.  相似文献   

13.
Rats were immunized with cysts of two Toxoplasma strains or with RH strain tachyzoites prior to pregnancy. The litters of the 13 rats that received homologous challenges with cysts during pregnancy, were all protected, whereas of 173 rats that received heterologous challenges with cysts or oocysts, only 21 protected their litters. 38.3 and 17% of rats immunized with the RH and with complete strains respectively, and 57% of control rats challenged with cysts, transmitted the infection congenitally. The percentages when similar groups were challenged with oocysts, were 33.3, 48.2, and 56.2%, respectively. Immunization with cysts did not completely protect against challenge with oocysts, even if the same strain was used. The divergence of these results from the complete protection against congenital toxoplasmosis observed in immune women and ewes, might be due to the use of excessive challenge doses in the model.  相似文献   

14.
Somatostatin biosynthesis in the hippocampus is activated during and following kindling epileptogenesis. The aim of this study was to investigate whether this phenomenon is associated with enhanced somatostatin release in vivo. Experiments have been run in awake, freely moving rats, implanted with a bipolar electrode in the right amygdala (for kindling stimulation), and with a recording electrode and a microdialysis probe in the left hippocampus. Basal somatostatin-like immunoreactivity (-LI) release was significantly greater in kindled than naive rats. In naive rats, a 2-min perfusion with 100 mM K(+) did not affect behavior and EEG recordings and nonsignificantly increased somatostatin-LI release; a 10-min K(+) perfusion evoked numerous wet dog shakes, electrical seizures (class 0; latency congruent with 8 min, duration congruent with 8 min), and somatostatin-LI release ( congruent with 350% of basal); and a single kindling after-discharge (4 +/- 3-s duration in the hippocampus) also evoked somatostatin-LI release ( congruent with 200% of basal). In kindled rats, a 2-min 100 mM K(+) perfusion evoked hippocampal discharges in three of seven animals (latency congruent with 2 min, mean duration congruent with 1.5 min) and increased somatostatin-LI release ( congruent with 250% of basal); a 10-min K(+) perfusion evoked behavioral seizures (class 1 to 5, latency congruent with 4 min, mean duration congruent with 12 min) with numerous wet dog shakes and robust somatostatin-LI release ( congruent with 350% of basal); and a kindling stimulation evoked generalized seizures (class 4 or 5, 77 +/- 15-s duration in the hippocampus) with remarkable somatostatin-LI release ( congruent with 300% of basal). These data demonstrate that hippocampal somatostatin release is increased in the kindling model in vivo.  相似文献   

15.
Summary The aim of this investigation was to evaluate the prevalence of atopic sensitization to chironomids (CHI) in patients with asthma and/or rhinitis (A/R), and to study concomitant sensitization to CHI and other allergens. Skin prick tests were performed with 3 different CHI extracts as well as with common inhalant allergens in 600 consecutive patients, 495 of which had A/R. Allergen specific IgE antibodies in the sera against CHI, shell fish and cockroaches were analyzed with Magic Lite.59 (12%) of the patients with A/R had a positive skin test with CHI. Positive skin tests with house dust mites and a storage mite were more common in CHI allergic patients than in other atopic patients. Nasal or conjunctival provocation tests, performed on 23 of the patients with positive skin test with CHI, were clearly positive in 7 cases (30%), questionable in 8 (35%) and negative in 8 cases (35%).Magic Lite, performed on sera from 50 of the patients with positive skin test against CHI, was positive with CHI in 39 cases (78%), with crayfish in 33 (66%), shrimp 20 (40%), cockroach 21 (40%) and with crab in 3 cases (6%).It is concluded that sensitization against CHI is common in patients with A/R. The clinical relevance of the positive test results is, however, unknown. Concomitant sensitization with CHI, crustaceans and cockroach is common.  相似文献   

16.
目的:探讨妊娠合并甲状腺功能亢进症的孕妇的妊娠结局,对母体造成的影响,抗甲状腺药物的使用情况及分娩方式。方法:对23例甲状腺功能亢进孕妇进行了回顾性分析,观察该病对孕妇的影响,对母儿造成的不良结局。结果:23例甲状腺功能亢进孕妇合并轻度妊娠高血压综合征的2例,中度4例,重度2例。合并心衰6例,合并胎膜早破5例,胎盘粘连2例,甲状腺危象1例,胎盘早剥1例,产后出血1例,前置胎盘1例。23例甲状腺功能亢进顺产6例,产钳1例,胎头吸引1例,剖宫产15例。出现早产9例,其中5例为医源性早产。胎儿宫内窘迫6例,死胎1例。结论:妊娠合并甲状腺功能亢进症常危及母婴健康,为降低母儿风险,孕前需很好地控制病情,孕期密切监控,合理治疗。  相似文献   

17.
We evaluated the effect of immunization with dendritic cells (DCs) pulsed with alpha-galactosylceramide (alphaGalCer) and listeriolysin O (LLO) 91-99 peptide, a dominant cytotoxic T lymphocyte (CTL) epitope of Listeria monocytogenes by observing the responses of specific CD8(+) T cells and in vivo CTL activity. DCs were pulsed with various combinations of alphaGalCer and LLO91-99 peptide and administered to BALB/c mice. Immunization with DCs pulsed with alphaGalCer and LLO91-99 at priming phase and with DCs pulsed with LLO91-99 alone at boosting phase induced stronger in vivo CTL activity, reduced the bacterial load in spleens of Listeria-challenged mice and augmented CD62L(+) CD8(+) central memory T cells compared with other immunization protocols. The blockade of interferon-gamma (IFN-gamma) at boosting phase reversed the induction of CD8(+) central memory T cells and reduced the bacterial load in spleens of Listeria-challenged mice immunized with DCs pulsed with alphaGalCer and LLO91-99 at both phases, suggesting that alphaGalCer at boosting phase has deleterious effects through IFN-gamma production. These results indicate that immunization with DCs pulsed with CTL epitope peptide together with alphaGalCer at priming phase, but not at boosting phase, is feasible for eliciting a specific CTL activity and protective immunity against infection of intracellular bacteria.  相似文献   

18.
To facilitate cell kinetics studies of brain tumors labeled with thymidine analogs, we developed a new method to identify nuclei labeled sequentially with bromodeoxyuridine (BUdR) and iododeoxyuridine (IUdR) by double staining with immunogold-silver and alkaline phosphatase. Patients received an intraoperative infusion of BUdR: excised tumor specimens were immediately labeled with IUdR in vitro. fixed with 70% alcohol, embedded in paraffin, and cut into 6 pm sections. The sections were incubated first with BR-3. a monoclonal antibody that recognizes only BUdR, and then with IU-4. a monoclonal antibody that recognizes both BUdR and IUdR: sections were counterstained with hematoxylin to identify unlabeled nuclei. Nuclei labeled only with IUdR stained red, whereas those labeled with BUdR or with both BUdR and IUdR stained black against a red background: unlabeled nuclei stained blue. This method was the most efficient differential staining technique to identify nuclei labeled only with IUdR and those labeled with BUdR among unlabeled nuclei.  相似文献   

19.
Four groups of intracellular structures can be recognized according to bismuth and uranyl staining and phosphorus content. (1) Those which contain phosphorus and stain strongly with uranyl acetate but not with bismuth (ribosomes, heterochromatin and mature ribosomal precursor granules), presumably because of their nucleic acid content. (2) Those which contain phosphorus and stain with uranyl acetate and bismuth (interchromatin granules, immature ribosomal precursor granules and mitochondrial granules), presumably because at least some of their phosphate is available to react with bismuth. (3) Those which contain little phosphorus but which stain strongly with bismuth and weakly with uranyl acetate (Golgi complex beads), perhaps because some ligand in addition to phosphate reacts with bismuth, and (4) those which do not contain phosphorus and stain with neither uranyl acetate nor bismuth (portasomes). Uranyl staining correlates strongly with the phosphorus content of nucleic acids, proteins and inorganic deposits. Bismuth will stain some phosphorylated molecules but not all. Thus only some phosphates stain with bismuth.  相似文献   

20.
目的通过对实验猴细菌性感染疾病脏器病理改变的观察和分析,完善实验猴病理检测资料,为实验动物病理检测标准的制定提供依据。方法选取86例实验猴按5种必检细菌性感染疾病(沙门菌病;志贺菌病;结核杆菌病;小肠结肠炎耶尔森菌病;空肠弯曲菌病)病原种类分组,对脏器标本进行病理剖检,HE染色观察记录病变,建立实验猴必检细菌性疾病病理检测资料。结果病理检测结果显示:沙门菌病表现为伤寒肉芽肿,结核杆菌病表现为结核肉芽肿,小肠结肠炎耶尔森菌病表现为纵行溃疡、急性炎及化脓性肉芽肿;志贺菌病、空肠弯曲菌病表现为急性炎和表浅溃疡。结论感染5种必检细菌的实验猴分别表现出不同的病理变化,病理检测对疾病的分析诊断有重要价值,检测结果补充了实验猴细菌性疾病病理检测资料,为制定实验动物病理检测指南提供了相关依据。  相似文献   

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