منابع مشابه
Mitosis: Springtime for Chromatin
When a eukaryotic cell divides, tension builds at centromeres as spindle forces pull chromosomes toward opposite poles during metaphase. New data show that centromeric chromatin stretches in response to these forces, revealing a mechanical role for chromatin packaging in mitosis.
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Most of the alarming data about temperature rises as a result of likely climate change have come from high latitudes and altitudes. There appears growing evidence that glaciers and ice sheets are melting rapidly. The latest evidence comes from comparisons of pictures in the Andes reported last month which show that the Upsala glacier in Argentina has melted substantially, creating a lake where ...
متن کاملCvi. Antiscorbutic Value of Lucerne
DURING the course of an investigation into the distribution of the antiscorbutic factor in some South African foodstuffs specimens of the common lucerne, or alfalfa (Medicago sativa) were examined, and it was found that, as judged by the indophenol reaction, this plant was an outstandingly rich source of vitamin C. According to the report on the vitamins issued by the Medical Research Council [...
متن کاملCvi . Digestion in the Cockroach
THE most recent account of the digestive processes of the cockroach is that given by Swingle [1925], who employed the Common Cockroach (Blatta orientalis) in his experiments and whose conclusions are briefly as follows. The salivary glands produce only an amylase. The hepatic caeca of the midgut produce an invertase, maltase, lipase and protease. The remainder of the mid-gut (stomach) secretes ...
متن کاملLegionella, springtime and potting soils.
Legionnaires’ disease has been named after the outbreak in Philadelphia 1976 when a mysterious pneumonia affected a large number of members of the American Legion, a United States military veterans association, which held a gathering at a hotel [1]. Legionella, the bacterium causing the disease was identified several months after this outbreak for the first time. Today we know that there are ab...
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ژورنال
عنوان ژورنال: Clinical and Vaccine Immunology
سال: 2016
ISSN: 1556-6811,1556-679X
DOI: 10.1128/cvi.00102-16