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Bacteriophage P2 was first isolated by G. Bertani from the Lisbonne and Carrère strain of E. coli in 1951. [3] Since that time, a large number of P2-like prophages (e.g. 186, HP1, HK239, and WΦ) have been isolated that shared characters such as host range, serological relatedness and inability to recombine with phage λ, and they seemed to be quite common in E. coli populations as about 30% ...
Ralph Morris Buchsbaum (January 2, 1907 – February 11, 2002) was an American zoologist, invertebrate biologist, and ecologist.His book Animals Without Backbones, first published in 1938, was the first textbook in biology to be reviewed by Time and featured in Life.
The remaining training can be continued in the chosen specialty for further 2–3 years. After full 4–5 years of training and completing few compulsory requirements (such as rotations at the other relevant departments for certain durations, thesis, and case studies), the candidate is eligible to start attempting the final exam called FCPS-II.
James D. Watson on the cover of The Scientist (1964), an early volume in the Life Science Library. The Life Science Library is a series of hardbound books published by Time Life between 1963 and 1967. Each of the 26 volumes explores a major topic of the natural sciences. They are intended for, and written at a level appropriate to, an educated ...
To avoid cellular damage, nucleotides should be neutralized, which is accomplished by P2 receptors. Almost every cell type expresses P2 receptors. Purinergic signalling also has a pathophysiological role in several immune cells including calcium mobilization, actin polymerization, chemotaxis, the release of mediators, cell maturation ...
All three BSCS curriculum versions stressed key biological themes, such as science as inquiry, the complementarity of structure and function, genetic continuity and evolution. The BSCS textbooks emphasized evolution as a major scientific theory at a time when it was largely omitted from existing high school curricula, and the BSCS organization ...
Phosphatidylinositol 4,5-bisphosphate or PtdIns(4,5)P 2, also known simply as PIP 2 or PI(4,5)P 2, is a minor phospholipid component of cell membranes. PtdIns(4,5)P 2 is enriched at the plasma membrane where it is a substrate for a number of important signaling proteins. [1] PIP2 also forms lipid clusters [2] that sort proteins. [3] [4] [5]
The current claim for life on Mars is grounded on old evidence reinterpreted in the light of recent developments. [ 46 ] [ 47 ] [ 48 ] In 2006, scientist Rafael Navarro demonstrated that the Viking biological experiments likely lacked sensitivity to detect trace amounts of organic compounds. [ 47 ]