Now showing items 11-20 of 45
A model of weak selection in the infinite alleles framework
(Springer-Verlag, 1986-08)
Ewens (1972) proposed a model in the infinite allele framework for populations with neutrality of all alleles at a particular locus. This paper proposes a generalisation of Ewens' result for situations where there is a ...
Phencyclidine-like behavioral effects in pigeons induced by systemic administration of the excitatory amino acid antagonist, 2-amino-5-phosphonovalerate
(Elsevier, 1986-09-15)
A selective N-methyl-D-aspartate antagonist, DL-2-amino-5-phosphonovalerate, was found to produce PCP-like catalepsy, discriminative stimulus effects, and stereotyped operant responding in pigeons when administered ...
Isolation of galactosyltransferase from human milk and the determination of its N-terminal amino acid sequence
(Elsevier, 1986-07-16)
Galactosyltransferase (EC 2.4.1.22), purified to homogeneity from human milk by affinity chromatography, had an apparent molecular weight of 53,000 as determined by denaturing polyacrylamide gel electrophoresis. Subtration ...
Dominance of iminopeptidase activity in the human oral bacterium Treponema denticola ATCC 35405
(Springer-Verlag, 1986-11)
Treponema denticola ATCC 35405, a human oral spirochete associated with periodontal disease, was shown to contain three enzymes (I, II, and III) with proline iminopeptidase activity. II and III were considered to be true ...
The effect of acquired microbial enzymes on assimilation efficiency in the common woodlouse, Tracheoniscus rathkei
(Springer-Verlag, 1986-06)
The digestive tract of the common woodlouse, Tracheoniscus rathkei Brandt (Isopoda: Oniscoidea), contains digestive enzymes active against α-1,4-glucans, which are the chief storage polysaccharides of vascular plants, ...
Isolation and characterization of a novel cytochrome P-450-like pseudogene
(Elsevier, 1986-01-29)
SummaryA rabbit liver P-450-like pseudogene has been isolated from a [lambda] phage genomic library. Sequence analysis revealed structural homology with respect to the rat P-450b and P-450e genes as well as a similar ...
Co-factors and HIV: What determines the pathogenesis of AIDS?
(Wiley Subscription Services, Inc., A Wiley Company, 1986-12)
No Abstract.
Newly discovered activities for calcitriol (1,25-dihydroxyvitamin D 3 ): Implications for future pharmacological use
(Wiley Subscription Services, Inc., A Wiley Company, 1986-02)
Recent studies have yielded new insights into the critical importance of adequate vitamin D 3 intake and metabolism. Investigations of the actions of 1,25-dihydroxyvitamin D 3 (calcitriol) on novel target tissues has ...
Inter-specific hybridization underlies phenotypic variability in Daphnia populations
(Springer-Verlag, 1986-03)
In the glacial lakes of the Palaearctic three species of Cladocera commonly coexist: Daphnia hyalina, D. galeata , and D. cucullata . Frequently these populations contain not only animals which are morphologically typical ...
Rules of retinotectal mapmaking
(Wiley Subscription Services, Inc., A Wiley Company, 1986-10)
The selective connections that nerve cells make to each other and to effector and receptor cells outside the nervous system are essential to organized behavior. The retinotectal projection has been used frequently in the ...