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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% ...
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 ...
Life Sciences is a weekly peer-reviewed scientific journal covering research on the molecular, cellular, and physiological mechanisms of pharmacotherapy. It was started in 1962 by Pergamon Press. According to the Journal Citation Reports, Life Sciences has a 2021 impact factor of 6.780. [1] The current Editor in Chief is Loren E. Wold. [2]
Buffer P2 is a lysis buffer solution produced by Qiagen.It contains 1% sodium dodecyl sulfate (SDS) (w/v) to puncture holes in cellular membranes, and 200mM NaOH.It is used in conjunction with other resuspension buffers and lysis buffers to release DNA from cells, often as part of the alkaline lysis method of purifying plasmid DNA from bacterial cell culture.
A TB guide, published by NIOSH in 1999, describes 13 combinations of contaminants with unique color markings. [11] The definitive guide from ANSI, who, since the passage of 42 CFR 84 in 1995, has published a 2001 revision of K13.1-1973, named Z88.7-2001, describes 14 combinations of contaminants with unique color markings, based on 13 out of ...
Phosphorus is an element essential to sustaining life largely through phosphates, compounds containing the phosphate ion, PO 4 3−. Phosphates are a component of DNA , RNA , ATP , and phospholipids , complex compounds fundamental to cells .
Scholars have divided the Quadripartita into a number of component parts, including a dedicatory letter ('DL'), a brief list of authorities used ('Auctoritätenkataog', or 'AK'), a list or register of titles for each book ('R1, 'R2', 'R3', 'R4'), a general preface ('GP'), prefaces for books 2–4 ('P2–4'), the text or canons of the four books ...
A distinguishing feature was that the nasal incision was retracted to the P2-P3 premolars. [17] The back of the skull was low and narrow, without the large lambdoid crests at the top and along the sagittal crest, which are otherwise found in horned and tusked animals that need strong muscles to push and fight. It also had a deep pit for the ...