منابع مشابه
Intracellular Phage Precursor
1. Staphylococci activated by rapid growth in the presence of excess O(2) and subsequently brought to a resting state by storage in Locke's solution at 5 degrees C. produce a significant rise in [phage] when added to phage-containing solutions. 2. For satisfactory activation the staphylococci require a period of active growth in the presence of oxygen. Activation proceeds best on the acid side ...
متن کاملAn Intracellular Timer in Oligodendrocyte Precursor Cells
Our interest in developmental timing began with a surprising experimental result obtained by Erika Abney, an immunologist who joined our group in the late 1970s. We had earlier defined a set of cell-type-specific markers that allowed us to distinguish the major types of glial cells found in suspensions and cultures of rat central nervous system (CNS) cells: astrocytes, which are heterogeneous a...
متن کاملThe Effect of Sonic Vibrations on Phage, Phage Precursor, and the Bacterial Substrate
1. A nickel tube magneto-striction oscillator of 320 watts output producing sonic vibrations of 9,300 cycles per second frequency is described. Certain structural innovations contribute to operating efficiency and permit more convenient exposure of test materials than in earlier types. 2. The rate of phage inactivation by sonic waves proceeds logarithmically with time and serves as a satisfacto...
متن کاملEnzyme associations in T4 phage DNA precursor synthesis.
A DIRECT APPROACH IS DESCRIBED TO THE QUESTION: Are enzymes of DNA precursor synthesis organized into a supramolecular structure? This approach involved sedimentation analysis of several T4 phage-coded early enzyme activities in crude lysates of infected Escherichia coli. One-third to one-half of several activities tested-dCMP hydroxymethylase, dTMP synthetase, deoxynucleoside 5'-monophosphate ...
متن کاملThe Photodynamic Inactivation of Phage Precursor by Methylene Blue
Methylene blue added to suspensions of activated staphylococci in amounts sufficient to furnish 1 x 10(5) molecules of dye/bacterium inactivates the phage precursor content of the cells without causing cell death when the mixtures are exposed to strong light of 4000-8000 A. There is a lag phase of approximately 15 minutes in the photodynamic inactivation of phage precursor by methylene blue. Th...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1939
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.22.6.699