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G I Karpukhin Iu G Ivannikov I G Marinich Iu V Luk'ianov V A Kondrat'ev 《Zhurnal mikrobiologii, epidemiologii, i immunobiologii》1979,(11):67-72
The work deals with the peculiarities of the spread of influenza A/USSR77 (H1N1) in the USSR and in the world. The authors point out that the most outstanding feature of the epidemic in the USSR was low morbidity rate among adults, persons aged up to 25 years being most affected. This suggests the existence of prolonged (up to 20 years) post-influenza immunity. The results of the mathematical pronostication of this epidemic for the territory of the USSR were analyzed and and found to be quite satisfactory for the majority of cities. 相似文献
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AV Shevchenko IG Budzanivska TP Shevchenko VP Polischuk D Spaar 《Archives Of Phytopathology And Plant Protection》2013,46(2):139-146
The work was focused on the investigation of possible dependencies between the development of viral infection in plants and the presence of high heavy metal concentrations in soil. Field experiments have been conducted in order to study the development of systemic tobacco mosaic virus (TMV) infection in Lycopersicon esculentum L. cv. Miliana plants under effect of separate salts of heavy metals Cu, Zn and Pb deposited in soil. As it is shown, simultaneous effect of viral infection and heavy metals in tenfold maximum permissible concentration leads to decrease of total chlorophyll content in experiment plants mainly due to the degradation of chlorophyll a. The reduction of chlorophyll concentration under the combined influence of both stress factors was more serious comparing to the separate effect of every single factor. Plants' treatment with toxic concentrations of lead and zinc leaded to slight delay in the development of systemic TMV infection together with more than twofold increase of virus content in plants that may be an evidence of synergism between these heavy metal's and virus' effects. Contrary, copper although decreased total chlorophyll content but showed protective properties and significantly reduced amount of virus in plants. 相似文献
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Benjamin Stich Bettina IG Haussmann Raj Pasam Sankalp Bhosale C Tom Hash Albrecht E Melchinger Heiko K Parzies 《BMC plant biology》2010,10(1):216
Background
The distribution area of pearl millet in West and Central Africa (WCA) harbours a wide range of climatic and environmental conditions as well as diverse farmer preferences and pearl millet utilization habits which have the potential to lead to local adaptation and thereby to population structure. The objectives of our research were to (i) assess the geographical distribution of genetic diversity in pearl millet inbreds derived from landraces, (ii) assess the population structure of pearl millet from WCA, and (iii) identify those geographical parameters and environmental factors from the location at which landraces were sampled, as well as those phenotypic traits that may have affected or led to this population structure. Our study was based on a set of 145 inbred lines derived from 122 different pearl millet landraces from WCA. 相似文献8.
Bur'ianov IaI Shevchuk TV Zakharchenko NS D'iachenko OV Marinich DV Vorob'ev IA 《Bioorganicheskaia khimiia》2000,26(5):397-399
The inner cytosine methylation was analyzed in the CCWGG sequences of the 5'-terminal region of the human calcitonin gene from peripheral blood and bone marrow cells in various forms of leukemia. Since these sequences remain nonmethylated both in norm and in various leukemia forms, the CpG dinucleotide hypermethylation of the 5'-terminus of the human calcitonin gene, characteristic for the development of leukemias, does not spread over adjacent CpNpG sequences. 相似文献
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Ya. I. Buryanov T. V. Shevchuk N. S. Zakharchenko O. V. D’yachenko D. V. Marinich I. A. Vorob’ev 《Russian Journal of Bioorganic Chemistry》2000,26(5):358-360
The inner cytosine methylation was analyzed in the CCWGG sequences of the 5′-terminal region of the human calcitonin gene
from peripheral blood and bone marrow cells in various forms of leukemia. Since these sequences remain nonmethylated both
in the norm and in various leukemia forms, the CpG dinucleotide hypermethylation of the 5′-end of the human calcitonin gene,
characteristic for the development of leukemias, does not spread to adjacent CpNpG sequences. 相似文献
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Margarethe Biong Inger T Gram Ilene Brill Fredrik Johansen Hiroko K Solvang Grethe IG Alnaes Toril Fagerheim Yngve Bremnes Stephen J Chanock Laurie Burdett Meredith Yeager Giske Ursin Vessela N Kristensen 《BMC medical genomics》2010,3(1):1-13