Now showing items 21-30 of 38
L-threonine dehydrogenase of Escherichia coli K-12
(Elsevier, 1978-11-14)
SummaryA rapid method for purifying L-threonine dehydrogenase from Escherichia coli K-12 cells, grown on a medium containing L-threonine as carbon source, has been developed. The procedure consists of three fractionation ...
Replication in situ and DNA encapsulation following induction of an excision-defective lysogen of Salmonella bacteriophage P22
(Elsevier, 1978-01-25)
The induction of an excision-defective bacteriophage P22 lysogen results in the production of particles which carry a DNA molecule of normal length within a normal capsid, but which are nonetheless defective. The DNA content ...
Abundance and diaspore weight in rare and common prairie grasses
(Springer-Verlag, 1978-01)
Abundance (g/m 2 ) and diaspore weight are positively correlated in seven species of perennial grasses that occur in prairies. The rare grasses (<10.0 g/m 2 ) have light dispersal units (0.06 to 1.76 mg); the common grasses ...
Models for growth kinetics of yeast
(Wiley Subscription Services, Inc., A Wiley Company, 1978-02)
No Abstract.
Association between cholesterol and 2,3-diphosphoglycerate in genetically selected hooded rat lines
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1978-02)
We have developed two strains of hooded rats with differing erythrocyte oxygen affinities by selection on red cell 2,3-diphosphoglycerate levels. Genetic studies have shown that these strains differ at one DPG-level-determining ...
Seasonal acclimatization to temperature in cardueline finches
(Springer-Verlag, 1978-06)
1. Seasonal variation in body constituents and utilization of lipid, protein, and carbohydrate during cold stress in American goldfinches were studied to determine relations of these functions to the pronounced seasonal ...
Resource utilization and coexistence of three species of Pogonomyrmex ants in an Upper Sonoran Grassland Community
(Springer-Verlag, 1978-01)
In an Upper Sonoran Grassland Community, three species of Pogonomyrmex ants coexist. Due to the similarity in their diets and the apparent limitation of food, coexistence is aided by the differential utilization of the ...
LH biosynthesis and secretion in rat anterior pituitary cell cultures: Stimulation of LH glycosylation and secretion by GNRH and an agonistic analogue and blockade by an antagonistic analogue
(Elsevier, 1978-02-14)
In rat anterior pituitary cell cultures GnRH (1nM) stimulated a progressive increase in LH release into the medium from 1 to 8 h of incubation, while cellular LH showed a corresponding decrease. GnRH (1nM) neither modified ...
Thermal inactivation differences of phosphofructokinase in erythrocytes from genetically selected high and low DPG rat strains
(Elsevier, 1978-08-29)
Phosphofructokinase (PFK) has been previously suggested as being responsible for the differences in glycolytic 2,3-diphosphoglycerate (DPG) levels in two inbred populations of Long-Evans hooded rats. The enzyme's activity ...
EcoRI analysis of bacteriophage P22 DNA packaging
(Elsevier, 1978-01-25)
Bacteriophage P22 linear DNA molecules are a set of circularly permuted sequences with ends located in a limited region of the physical map. This mature form of the viral chromosome is cut in headful lengths from a ...