Now showing items 31-40 of 2924
Virulent mutants of phage P22 : II. Physiological analysis of P22 virB-3 and its component mutations
(Elsevier, 1972-03)
The virulent mutant of phage P22, virB-3, consists of two mutations: K5, which maps in the c2 repressor gene, and Vx, which maps between c2 and c3. Although neither P22 K5 nor P22 Vx is virulent, each of these mutants can ...
Properties of yeast pyruvate decarboxylase and their modification by proteolytic enzymes : I. Stability of decarboxylases from wild-type and mutant strains
(Elsevier, 1968)
High concentrations of inorganic phosphate and ammonium sulfate stabilize yeast pyruvate decarboxylase to heating at 60 [deg] for long periods of time in the presence of TPP and Mg+. When heated at 60 [deg] in phosphate ...
MoFe Cofactor of nitrogenase: Extraction, purification, and characterization
(Elsevier, 1989-08)
Ototoxicity of aminoglycosides correlated with their action on monomolecular films of polyphosphoinositides
(Elsevier, 1980-02-15)
The ototoxicities of eight aminoglycoside antibiotics and fragments were measured quantitatively by cochlear perfusion in the guinea pig. Perilymphatic spaces were perfused for 1 hr with `artificial perilymph' containing ...
Immune response to calf collagen type I in mice: A combined control of Ir-1A and non H-2 linked genes
(Springer-Verlag; Springer-Verlag New York Inc., 1975-12)
The genetically controlled immune response to calf skin collagen type I in mice could be demonstrated to be governed by at least two genes. One is linked to the H-2 complex and located within the IA subregion. High-responder ...
Transcriptional regulation during T-cell development: the [alpha] TCR gene as a molecular model
(Elsevier, 1992)
The regulation of gene expression during lymphocyte differentiation is a complex process involving interactions between multiple positive and negative transcriptional regulatory elements. In this article, transcriptional ...
Human placental glutathione S-transferase-mediated metabolism of methyl parathion
(Elsevier, 1986-10-15)
The ability of human placental glutathione S-transferase (GSHTr) to metabolize methyl parathion (MeP) was examined. MeP was found to be a substrate for both partially purified pre-term and highly purified term placental ...
Effect of Neuropeptide Y on Natural Killer Activity of Normal Human Lymphocytes
(Elsevier, 1993-03)
The in vitro effect of neuropeptide Y (NPY) on natural killer (NK) cell activities of normal lymphocytes was investigated. NPY at 10-9 to 10-12M concentrations produced significant suppression of NK activity against K 562 ...