Now showing items 1-10 of 50
Nuclear characteristics of cardiac myocytes following the proliferative response to mincing of the myocardium in the adult newt, Notophthalmus viridescens
(Springer-Verlag, 1988-09)
Amphibian cardiac myocytes are predominantly mononucleated and have been demonstrated to respond to injury with DNA synthesis and mitosis. The nature of this response with regard to nuclear number and ploidy is unclear. ...
Response of Solidago canadensis clones to competition
(Springer-Verlag, 1988-11)
Transplants of ten Solidago canadensis clones were grown under high and low competition in the field to determine whether clones differed in survival, growth, and reproduction under natural conditions. Transplants had ...
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. ...
GTP[gamma]S-stimulated hydrolysis of phosphatidyinositol-4,5-bisphosphate by soluble phospholipase C from human platelets requires soluble GTP-binding protein
(Elsevier, 1988-07-15)
GTP-binding activity was fractionated into two peaks (GI and GII) by chromatography on heparin-agarose. GTP-dependent PLC activity eluted as a single peak, which co-chromatographed with GTP-binding peak GII. Rechromatography ...
Normalization of liver glucosylceramide levels in the "Gaucher" mouse by phosphatidylserine injection
(Elsevier, 1988-04-15)
A model of the human genetic disorder, Gaucher disease, can be rapidly generated in mice by the injection of emulsified glucosylceramide and an inhibitor of the lipid's hydrolase, conduritol B epoxide. The liver grows ...
Exposure to fluctuating salinity enhances free amino acid accumulation in Tigriopus californicus (Copepoda)
(Springer-Verlag, 1988-01)
Intracellular concentrations of free amino acids (FAA) in the intertidal copepod Tigriopus californicus increase in response to hyperosmotic stress and decrease in response to hypo-osmotic stress. The purpose of this study ...
Behavioral evidence for host races in Rhagoletis pomonella flies
(Springer-Verlag, 1988-06)
One of the most controversial putative cases of host race formation in insects is that of the apple maggot fly, Rhagoletis pomonella (Diptera: Tephritidae). A principal cause of the controversy is lack of relevant data. ...
The carbohydrate moiety of the activator protein for glucosylceramide [beta]-glucosidase
(Elsevier, 1988-08-15)
SAP-2 is a family of heat-stable, acidic glycoproteins which stimulate enzymatic hydrolysis of glucosylceramide. We studied the carbohydrate moieties of a ConA-binding form of SAP-2. The protein contained glucosamine, ...
Optimal central-place foraging by beavers: Tree-size selection in relation to defensive chemicals of quaking aspen
(Springer-Verlag, 1988-07)
At a newly occupied pond, beavers preferentially felled aspen smaller than 7.5 cm in diameter and selected against larger size classes. After one year of cutting, 10% of the aspen had been cut and 14% of the living aspen ...