1,464 Result(s)

Article

Effect of some phosphodiesterase inhibitors on two different preparations of adenosine 3′,5′-monophosphate phosphodiesterase

Neun Substanzen wurden an zwei verschiedenen PDE Präparationen auf ihre PDE hemmenden Eigenschaften untersucht. Dabei zeigte sich, dass die I₅₀-Werte von der Art der Präparation und von der Substratkonzentration ...

A. du Moulin, J. Schultz in Experientia (1975)

Chapter and Conference Paper

Phylogenesis of the Vertebrate Immune System

Our current knowledge of the phylogenesis of immunity is exclusively based on studies of comparative immunity. We know, for example, that some functional components of the vertebrate immune system such as allo...

L. Du Pasquier in The Immune System (1976)

Article

Adenylate cyclase and phosphodiesterase from brain tissue: Different stabilities during incubation of cerebral cortical slices

Adenylate cyclase and phosphodiesterase were prepared from brain slices from guinea-pig. The specific acitivity of adenylate cyclase declined rapidly with increasing incubation time of tissue slices, while pho...

J. Schultz, Gertrud Kleefeld, A. du Moulin in Experientia (1978)

Article

Interaction of 24,25-Dihydroxyvitamin D₃ and parathyroid hormone on bone enzymes in vitro

The in vitro effects of vitamin D₃ metabolites, parathyroid extract (PTE), purified parathyroid hormone (bPTH), vitamin A, and heparin on acid and alkaline phosphatases in rat or mouse calvaria in culture were in...

M. Lieberherr, M. Garabédian, H. Guillozo… in Calcified Tissue International (1979)

Chapter

Ontogeny of Immunological Functions in Amphibians

The theoretical basis for studying the ontogeny of immunological function in amphibians is linked to aspects of amphibian embryonic and larval development. The free-swimming larval period, the absence of mater...

Louis Du Pasquier in Phylogeny and Ontogeny (1982)

Article

The effect of differing dietary calcium and phosphorus contents on mineral metabolism and bone histomorphometry in young vitamin D-replete baboons

Young baboons were fed semisynthetic, vitamin D-containing diets differing in calcium and/or phosphorus content over a 16 month study period. Diets low in calcium alone or low in both calcium and phosphorus le...

John M. Pettifor, Pierre J. Marie, Michael R. Sly… in Calcified Tissue International (1984)

Article

Exacerbation of rickets and osteomalacia by maize: A study of bone histomorphometry and composition in young baboons

Three groups of young baboons were fed for 16 months on one of three diets. The first group was given a well-tried semisynthetic formula, the second group the same diet save that vitamin D had been omitted, an...

Michael R. Sly, Willem H. van der Walt, Du Bruyn Du Bruyn… in Calcified Tissue International (1984)

Article

Conjugal septicemia:Salmonella typhimurim (STM) in a couple with AIDS

B. J. Hirschel, R. Auckenthaler, R. Martin-du-Pan, J. -Cl. Piffaretti in Experientia (1986)

Article

Evidence of a direct action of triiodothyronine (T₃) on the cell membrane of GH₃ cells: an electrophysiological approach

Electrophysiological experiments demonstrate that triiodothyronine (T₃) exerts a direct effect on the membrane of a strain of cultured rat pituitary tumor cells, GH₃/B₆. These cells respond to pressure applicatio...

J. S. du Pont, J. -M. Israel in Experientia (1987)

Article

Preliminary observations on the co-existence of regulatory peptides in cells of the baboon endocrine pancreas

Immunocytochemical procedures at ultrastructural and light microscopy level revealed, in the Chacma baboon endocrine pancreas, cells which were immunoreactive for glucagon and pancreatic polypeptide (PP). Some...

S. A. Wolfe-Coote, J. Louw, D. F. du Toit in Experientia (1988)

Article

Effect of aerobiosis on fermentation and key enzyme levels during growth of Pichia stipitis, Candida shehatae and Candida tenuis on d-xylose

The relationship between the degree of aerobiosis, xylitol production and the initial two key enzymes of d-xylose metabolism were investigated in the yeasts Pichia stipitis, Candida shehatae and C. tenuis. Anoxic...

James C. du Preez, Brian van Driessel, Bernard A. Prior in Archives of Microbiology (1989)

Protocol

Sequencing Reactions for the Applied Biosystems 373AAutomated DNA Sequencer

Efficient completion of large DNA sequencing projects has been greatly facilitated by the development of fluorescence-based dideoxynucleotide sequencing chemistries and instruments for real-time detection of f...

Nicolette Halloran, Zi** Du, Richard K. Wilson in DNA Sequencing Protocols (1993)

Article

Linkage map of seven polymorphic markers on rat Chromosome 18

A genetic linkage map of seven polymorphic markers was created with F₂ intercross progeny of F344/N and LEW/N rats and assigned to rat Chromosome (Chr) 18. Five of the markers described were defined by simple seq...

Elaine F. Remmers, Ellen A. Goldmuntz, Hongbin Zha, Leslie J. Crofford… in Mammalian Genome (1993)

Article

Genetic map of seven polymorphic markers comprising a single linkage group on rat Chromosome 5

Seven polymorphic markers comprising a single linkage group were assigned to rat Chromosome (Chr) 5 by linkage analysis of the progeny of an F₂ intercross of Fischer (F344/N) and Lewis (LEW/N) inbred rats. Three ...

Ellen A. Goldmuntz, Elaine F. Remmers, Hongbin Zha, Peter Mathern… in Mammalian Genome (1993)

Chapter

Detection of Genetic Imbalances in Tumor Genomes by Fluorescence in situ Hybridization with Tumor Genomic DNA and Subregional DNA Probes

During the last decade strong evidence has been accumulated for a causal relationship between specific genetic alterations and the abnormal differentiation state and growth behaviour of malignant cells. Such a...

T. Cremer, P. Lichter, S. Popp, E. Schröck, A. Jauch… in Chromosomal Alterations (1994)

Article

Kinetic characterization of phosphoenolpyruvate carboxylase extracted from whole-leaf and from guard-cell protoplasts of Vicia faba L. (C₃ plant) with respect to tissue pre-illumination

Whole leaves and guard-cell protoplasts of the C₃ plant Vicia faba L. (broad bean) were separately extracted following a period of illumination or following a period of darkness. Kinetic parameters of phosphoenol...

Xue-Chen Wang, William H. Outlaw Jr, Jean André De Bedout… in The Histochemical Journal (1994)

Article

Expression of intron-encoded maturase-like polypeptides in potato chloroplasts

The trnK gene has been identified on a cloned plastid DNA fragment of potato (Solanum tuberosum cv Désirée). This gene codes for a tRNA-Lys and is interrupted by a 2.5-kb intron belonging to the group II organell...

P. du Jardin, D. Portetelle, L. Harvengt, M. Dumont, B. Wathelet in Current Genetics (1994)

Article

Effect of plant genotype on the transformation of cultivated alfalfa (Medicago sativa) by Agrobacterium tumefaciens

The trait for somatic embryogenesis is being introduced sexually into alfalfa (Medicago sativa) breeding populations to facilitate genetic transformation of this crop. Cocultivation experiments were conducted wit...

Sarah Du, Larry Erickson, Steve Bowley in Plant Cell Reports (1994)

Article

Influence of combined nitrogen level andEucalyptus competition on dinitrogen fixation in nodulatedCasuarina

Experiments were conducted to determine the effect on biological dinitrogen fixation byCasuarina of available nitrogen (N) in the substrate and competition by interplantedEucalyptus. In these experiments, combine...

D. D. Baker, D. Du, M. Fried in Protoplasma (1994)

Article

Microwave histoprocessing of bone marrow trephine biopsies

In recent years, the microwave oven has been increasingly used in the pathology laboratory for processing of tissue for diagnostic purposes with a remarkable reduction in processing time and also reports of ex...

I. Louw, D. P. De Beer, M. J. Du Plessis in The Histochemical Journal (1994)