Now showing items 41-50 of 443
Differing calcium requirements for regulatory effects of ATP, ATP[gamma]S and adenosine on O2 responses of human neutrophils
(Elsevier, 1988-07-29)
In formyl peptide stimulated human neutrophils the enhancement of O2 responses by ATP and ATP[gamma]S requires extracellular calcium. In contrast, the inhibitory effects of adenosine are independent of a calcium requirement. ...
Herpes simplex virus thymidine kinase gene is stably maintained and expressed in cells transformed by protoplast fusion
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1984-03)
We examined a series of transformed cell lines resulting from transfer of the herpes simplex virus type 1 thymidine kinase gene to Ltk − cells by protoplast fusion gene transfer. We show that multiple copies of the ...
A reaction-diffusion system of a predator-prey-mutualist model
(Elsevier, 1986-04)
Mutualism is part of many significant processes in nature. Mutualistic benefits arising from modification of predator-prey interactions involve interactions of at least three species. In this paper we investigate the ...
Isolation of chromosome clusters from metaphase-arrested HeLa cells
(Springer-Verlag, 1982-08)
We have developed a simplified approach for the isolation of metaphase chromosomes from HeLa cells. In this method, all the chromosomes from a cell remain together in a bundle which we call a “metaphase chromosome cluster”. ...
Palearctic predator invades North American Great Lakes
(Springer-Verlag, 1987-12)
Bythotrephes cederstroemii Schoedler, a predatory freshwater zooplankter (Crustacea: Cladocera), was first found in the Laurentian Great Lakes in December 1984. The first individuals were from Lake Huron, followed in 1985 ...
Visualization of opiate receptors and opioid peptides in sequential brain sections
(Elsevier, 1982-09)
Autoradiographic and immunocytochemical studies were carried out on adjacent sections from formaldehyde-perfused rat brains in order to directly correlate the distribution of opiate receptors and opioid peptides. Perfusion ...
Regulation of insulin responsiveness in rat hepatoma cells
(Elsevier, 1980-02-12)
Insulin causes a 5 to 10-fold increase in the velocity of [alpha]-aminoisobutyric acid transport and a 2 to 3-fold increase in tyrosine aminotransferase activity in dexamethasone-treated hepatoma tissue culture cells. ...
Steric factors involved in the action of glycosidases and galactose oxidase
(Elsevier, 1981-11-16)
[alpha]-(1-->2)--Fucosidase, [beta]--galactosidase and galactose oxidase are sterically hindered by certain types of branching in the oligosaccharide chains. 1) [beta]--Galactosidase will not cleave galactose when the ...
Differences in the methylation of brain histamine between audiogenic seizure-sensitive and -resistant deermice
(Elsevier, 1981-06-22)
We have investigated the catabolism of [3H] histamine (HA), after intraventricular (i.vt.) administration, in brains of the audiogenic seizure susceptible (SS) and resistant (SR) deermouse . Brains of SS mice had lower ...