4,433 Result(s)
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Article
**na Hong
Cell Biology
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Article
Effect of 5-hydroxytryptamine on sodium transport across bullfrog skin
5-hydroxytryptamine, when present in the solution bathing the inside surface of bullfrog skin at concentrations of 0.25–25.0 mM, reduced both electrical potential difference and short-circuit current across th...
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Microscopic evaluation of the effects of some vital staining agents on growing bone in rabbits
Various doses of alizarin red S, trypan blue, chlortetracycline and45Ca were injected into young male New Zealand white rabbits. The influence of these agents on bone growth was studied at the microscopic level b...
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An analysis of the growth of the cranial vault in rabbits by vital staining with lead acetate
The mode and the rate of formation of individual bones in the cranium were studied by vital staining with lead acetate in 13 New Zealand white rabbits beginning at 35 days of age. These evaluations were compar...
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Synthesis rates of phospholipids derived from bone matrix of the rat
The incorporation and disappearance of32P orthophosphate into serum phospholipids and into the phospholipids of the metaphyseal and diaphyseal bones of the rat were studied from 0 to 70 hours. Lecithin, lysolecit...
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Hot hydrogen atoms reactions of interest in molecular evolution and interstellar chemistry
Hot hydrogen atoms which are photochemically generated initiate reactions among mixtures of methane, ethane, water and ammonia, to produce ethanol, organic amines, organic acids, and amino acids. Both ethanol ...
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New reactions of paraformaldehyde and formaldehyde with inorganic compounds
Both paraformaldehyde and formaldehyde undergo reactions in the presence of several inorganic compounds to generate a variety of interesting organic products that can be important in chemical evolutionary proc...
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Effect of estrogen on the collagenolytic activity of rat bone
Rats were injected with 17 beta-estradiol benzoate intramuscularly and the collagenolytic activity of the rat bones was assayed by measuring the degradation of purified reconstituted3H-proline-and3H-hydroxyprolin...
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Changes in organic matrix of bone and of bone and blood ATP in rats fed rachitogenic diets
Vitamin D deficient and phosphate deficient states were produced in young rats by the use of synthetic diets. Whole blood ATP, serum calcium and phosphorus and the ash, phospholipid, hexosamine and hydroxyprol...
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Hydrogen atom initiated chemistry
H atoms have been created by the photolysis of H2S. These then initiated reactions in mixtures involving acetylene-ammonia-water and ethylene-ammonia-water. In the case of the acetylene system, the products consi...
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Degree of differentiation and blood vessel proximity in B16 melanoma
Corded structures consisting of rows of viable tumour cells around a central blood vessel are present in a number of transplantable mouse tumours, including transplantable B16 melanomas.
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Induced genetic deficiency of the nucleolar organizer in rat kangaroo cells (PTK1) by ultraviolet laser microirradiation
An ultraviolet laser microbeam was used to irradiate one of the two nucleolar organizer regions of PTK1 cells in early prophase. The directed nucleolar deficiency induced by ultraviolet laser irradiation was main...
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Computed insulin profiles for normalization of glycemia in diabetic patients
The objective of this preliminary study was to develop a new quantitative method of setting the initial insulin infusion patterns in treatment of diabetic patients. The method is based upon the mathematical es...
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Regional variations in proliferation rate and degree of differentiation in B16 melanomas
The relationship between proliferation rate and degree of differentiation has been studied in different regions of transplantable B16 melanomas. The regions studied were peripheral parts of the tumours and the...
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Somatic embryogenesis and plant regeneration in cultured immature inflorescences of Setaria italica
Young inflorescence explants of Setaria italica in culture showed high capacity for regenerating plantlets through somatic embryogenesis. Embryogenic callus formation was initiated from the explants cultured on M...
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Anti-troponin-T monoclonal antibody crossreacts with all muscle types
Monoclonal antibodies to troponin-T were produced by the hybridoma technique. Culture supernatants were initially screened using an enzyme-linked immunoabsorbent assay (ELISA). Positive clones were subcloned t...
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Sequence and evolution of rhesus monkey alphoid DNA
Analysis of rhesus monkey alphoid DNA suggests that it arose by tandem duplication of an ancestral monomer unit followed by independent variation within two adjacent monomers (one becoming more divergent than ...
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Light-adaptation in the photophobic response by Stentor coeruleus
Effects of preillumination on photophobic response (light-adaptation) and recovery of the photophobic sensitivity in the dark (dark-adaptation) in Stentor coeruleus were examined. When the cells were preilluminat...
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Destruction of organelle nuclei during spermatogenesis inChara corallina examined by staining with DAPI and anti-DNA antibody
The behavior of plastid and mitochondrial nuclei (synonymous with nucleoids) during spermatogenesis inChara corallina was examined by fluorescence microscopy after staining with 4′,6-diamidino-2-phenylindole (DAP...
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Plant regeneration from protoplasts of soybean (Glycine max L.)
Protoplasts were isolated from immature cotyledons of six cultivars of Glycine max L. and cultured in the KP8 liquid medium supplemented with 0.2 mg/L 2,4-D, 1 mg/L NAA and 0.5 mg/L ZT. The protoplasts started to...
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Chloroplast and nuclear genomes of Chlamydomonas reinhardtii share homology with Escherichia coli genes for DNA replication, repair and transcription
Most of the cpDNA genes studied to date are genes encoding elements of the photosynthetic apparatus and translational machinery. Much less is known about genes encoding the polypeptides involved in transcripti...
