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排序方式: 共有73条查询结果,搜索用时 15 毫秒
1.
P. Mark Hogarth Margaret L. Hibbs Lisa Bonadonna Bernadette M. Scott Ewa Witort Geoffrey A. Pietersz Ian F. C. McKenzie 《Immunogenetics》1987,26(3):161-168
A cDNA clone encoding the mouse Ly-17+ Fc receptor for IgG, isolated from a myelomonocytic cell line, was sequenced and expression of mRNA and the functional FcR investigated. The receptor is a 301 amino acid transmembrane glycoprotein with two homologous extracellular domains that are also homologous to members of the Ig superfamily. The receptor has four sites of N-linked glycosylation and a long 94 amino acid cytoplasmic tail. Northern analysis, immune complex binding, and serological studies demonstrate that the receptor encoded by the cDNA clone binds mouse IgG1/2b and rabbit IgG complexes. 相似文献
2.
Gianni Bonadonna Silvio Monfardini Mario de Lena Franca Fossati-Bellani 《BMJ (Clinical research ed.)》1969,3(5669):503-506
Adriamycin, a new antitumour antibiotic of the anthracycline group with a structural formula very similar to daunorubicin, has proved to have potent tumour-growth-inhibiting properties, and to be particularly effective in childhood malignancies. Though adriamycin produces a higher percentage of side-effects than daunorubicin—namely, stomatitis and alopecia—a lower dosage may be used for therapy. 相似文献
3.
Sarah Leclaire Maria Strandh Gaia DellAriccia Marianne Gabirot Helena Westerdahl Francesco Bonadonna 《Molecular ecology》2019,28(4):833-846
To increase fitness, a wide range of vertebrates preferentially mate with partners that are dissimilar at the major histocompatibility complex (MHC) or that have high MHC diversity. Although MHC often can be assessed through olfactory cues, the mechanism by which MHC genes influence odour remains largely unclear. MHC class IIB molecules, which enable recognition and elimination of extracellular bacteria, have been suggested to influence odour indirectly by shaping odour‐producing microbiota, i.e. bacterial communities. However, there is little evidence of the predicted covariation between an animal's MHC genotype and its bacterial communities in scent‐producing body surfaces. Here, using high‐throughput sequencing, we tested the covariation between MHC class IIB genotypes and feather microbiota in the blue petrel (Halobaena caerulea), a seabird with highly developed olfaction that has been suggested to rely on oduor cues during an MHC‐based mate choice. First, we show that individuals with similar MHC class IIB profiles also have similar bacterial assemblages in their feathers. Then, we show that individuals with high MHC diversity have less diverse feather microbiota and also a reduced abundance of a bacterium of the genus Arsenophonus, a genus in which some species are symbionts of avian ectoparasites. Our results, showing that feather microbiota covary with MHC, are consistent with the hypothesis that individual MHC genotype may shape the semiochemical‐producing microbiota in birds. 相似文献
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Bonadonna L Briancesco R Filetici E Manuppella A Pourshaban M Semproni M 《The new microbiologica》2002,25(1):21-29
Thirty-three isolates of Aeromonas from environmental sources and clinical samples were tested and the results, obtained using the pulsed field gel electrophoresis (PFGE) technique, were compared with those obtained by biochemical typing. On the basis of their biochemical characteristics 31 strains was assigned to one of the recognised groups or species within the Aeromonas genus and 2 strains to the species Vibrio fluvialis. These latter were nevertheless found to belong to the Aeromonas genus on the basis of the chromosomal DNA analysis. Among the clinical isolates the biochemical analysis showed greater uniformity. A low correlation between molecular and traditional typing methods was observed with a wider heterogeneity at the genomic level. The results showed the difficulty of discriminating Aeromonas isolates by conventional biochemical methods. The genomic analysis performed by PFGE can be a more effectual technique, which can be used for epidemiological and ecological studies of the microorganisms belonging to the Aeromonas group. 相似文献
7.
Francesco Bonadonna Jérôme Mardon 《Ethology : formerly Zeitschrift fur Tierpsychologie》2010,116(2):176-182
Burrowing is a widespread nesting behaviour, found in vertebrates and invertebrates. It is particularly common in small procellariiform seabirds such as blue petrels (Halobaena caerulea) and Antarctic prions (Pachyptila desolata), two closely related petrel species. However, digging a burrow is costly and alternative strategies may evolve. Accordingly, blue petrel males can adopt two alternative nesting strategies: digging a new burrow or squatting in an empty one. Importantly, a blue petrel squatter arriving at the colony to breed is more likely to find empty Antarctic prion burrows than empty blue petrel burrows, since the former species only start breeding a month later. However, squatting in a prion’s burrow is risky for blue petrels as the legitimate owner very often returns and claims the burrow back, thus ruining the squatter’s breeding attempt. We present here results of a survey of two sympatric colonies of blue petrels and Antarctic prions on Kerguelen Island. Our data show that blue petrel squatters preferentially occupy blue petrel empty burrows. To investigate potential underlying mechanisms behind this preference, we used a simple Y‐maze design to show that blue petrels can discriminate and prefer their specific odour over the prion odour. Our results confirm the existence of alternative burrowing strategies in blue petrels and suggest that squatters could use olfaction to avoid the less suitable Antarctic prion burrows. 相似文献
8.
Randrianarison Rose Marie Lutz Meredith Torti Valeria Tan Chia Bonadonna Giovanna Randrianambinina Blanchard Rasoloharijaona Solofonirina Rabarison Harison Miaretsoa Longondraza Rarojoson Nianja Jemisa De Gregorio Chiara Valente Daria Gamba Marco Ratsimbazafy Jonah Giacoma Cristina 《International journal of primatology》2022,43(4):584-610
International Journal of Primatology - Deforestation around the world is a major threat to primates. Understanding primate species’ habitat and dietary requirements is critical in creating... 相似文献
9.
First detection of papillomaviruses and polyomaviruses in swimming pool waters: unrecognized recreational water‐related pathogens? 下载免费PDF全文
10.
Because passerine birds have a very small relative olfactory bulb size, they have been considered to have weak olfactory capacities for decades. Recent investigations however suggest that breeding female blue tits (Parus caeruleus) are sensitive to lavender odour in the reproductive context of building and maintaining the nest. Here, we present results of an olfactory conditioning experiment in blue tits held in semi-natural conditions during the breeding season. We show that captive male blue tits, trained to associate lavender odour with a food reward, are more attracted to an empty feeder box emitting lavender odour than an odourless empty feeder box. Females did not distinguish significantly between empty feeders with and without lavender odour during the test phase, although they responded positively at the end of the training phase. These results suggest that male blue tits can use olfaction in a context not related to nest building. Additional experiments will be required to better understand the observed sex differences in response to the experimental set up, and in what context free-ranging individuals use olfaction. 相似文献