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edited by L. Southgate, C. Lockie, S. Heard and M. Wood, Oxford University Press, 1997. pound27.50 (476 pages) ISBN 0 919 262092 4.  相似文献   

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1会议简介噬菌体是一类以原核生物(包括细菌、真菌、放线菌或螺旋体等)为宿主的病毒,它最早于1915年被发现,之后,d’Herelle在1917年再次发现了这种能裂解细菌的生物类群,并将其命名为"bacteriophage",简称"phage"。近年来随着细菌耐药形势的日益严峻,越来越多有远见  相似文献   

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Results from several medical investigations carried out using the Oxford scanning proton microprobe are presented, including maps of the hepatic copper-distribution in primary biliary cirrhosis and maps of the iron distribution in primary hemochromatosis. Preliminary studies of human nervous tissue reveal that morphologically recognizable structures can be differentiated using precision elemental mapping, and this may lead to a powerful new way of distinguishing subtle perturbations of structure and function. In further prelimianry studies, localized aluminum structures have been observed in Alzheimer’s disease tissue at bulk levels of less than parts per million.  相似文献   

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《Ibis》1930,72(S1):458-461
A part from considerations as to where it is best wedged into the linear sequence, the brachyptera group is defined in general terms as a compact group of four small or very small species which resemble one another in many important specific characters and the other thirty-six species classified here as Cisticola in so many ways of form, coloration and behaviour as to make them best understood by classifying them also under that generic name.  相似文献   

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《Ibis》1930,72(S1):411-413
T he two giants of the genus-that is so far as the cock birds are concerned, but, as with chiniana and a few others, their hens are so much smaller that even when in the field the two sexes are seen in company one may often doubt their being a pair of the same species.  相似文献   

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