Results 261 to 270 of about 2,851,396 (315)
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A test for mutagenicity of caffeine in mice
Zeitschrift für Vererbungslehre, 19621. The results are given of an experiment comparing the specific locus mutation-rates in male and in female mice having 0.1% caffeine dissolved in their drinking-water up to the age of ten weeks. Their parents had the same treatment from the time of mating, so that the tested germ-cells might be exposed to caffeine during embryonic development.
Lyon, M F, Phillips, R J, Searle, A G
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Assessment of Mutagenicity Tests
1980Using the short term tests it is possible to evaluate whether or not chemicals are potential mutagens. The mutagenic hazards for man, however, have to be established by tests on mammals in vivo. Where reproducible mutagenicity findings exist with conclusive tests, consideration of the possible threshold doses, together with benefit/risk equations ...
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1985
The wx locus assay in maize pollen grains may be conducted using one of two chronic treatment regimens and under in situ conditions. Solutions of a test chemical can be applied to the soil of plants grown in pots or to the nutrient medium of plants grown under hydroponic culture. Under in situ conditions, test plots may be constructed in the field, and
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The wx locus assay in maize pollen grains may be conducted using one of two chronic treatment regimens and under in situ conditions. Solutions of a test chemical can be applied to the soil of plants grown in pots or to the nutrient medium of plants grown under hydroponic culture. Under in situ conditions, test plots may be constructed in the field, and
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Mutagenicity testing with eukaryotic microorganisms
Archives of Toxicology, 1980The different genetic end-points which can be tested to detect genotoxicity of chemicals in fungi and especially in the yeast Saccharomyces cerevisiae are described. They include reversion and forward mutation, mitochondrial deletions and point mutations, mitotic or meiotic intra- and intergenic recombination, chromosomal non-disjunction and aneuploidy.
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Mutagenicity research and testing in Sweden
Mutation Research, 1975A survey is given of Swedish legislation for control of chemicals in the environment. Although no direct legal requirements for mutagenicity testing of chemicals exist at present in Sweden, such requirements can be enforced within the existing laws. Testing and research in chemical mutagenicity are especially performed at the Environmental Toxicology ...
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Journal of Toxicology and Environmental Health, 1980
The universality of the genetic system in living organisms and the high experimental correlation between mutagenicity and carcinogenicity provide the rational basis for the use of mutagenicity in screening of possible carcinogens. The present genetic methodologies using microorganisms, cell cultures, Drosophila, and rodents are evaluated.
C, Ramel, U, Rannug
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The universality of the genetic system in living organisms and the high experimental correlation between mutagenicity and carcinogenicity provide the rational basis for the use of mutagenicity in screening of possible carcinogens. The present genetic methodologies using microorganisms, cell cultures, Drosophila, and rodents are evaluated.
C, Ramel, U, Rannug
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Mutagenicity tests with cadmium in the mouse
Toxicology, 1975The testicle is known to be the critical organ in acute exposure of experimental mammals to cadmium. Such treatment results in temporary sterility and, very often, in the appearance of testicular interstitial cell tumors. The present experiments were performed to determine whether such deleterious effects on the male reproductive organs involved any ...
Gilliavod, N, Leonard, A
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Microorganisms as test systems for mutagenicity
Archiv f�r Toxikologie, 1971The mutagenic activity of different compounds in bacterial mutagenicity test systems has been investigated. The systems used include back-mutations to prototrophy in auxotrophic strains of Serratia marcescens and forward mutations to galactose prototrophy in a phenotypic galactose negative strain of Escherichia coli.
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Mutagenicity Testing with Drosophila Melanogaster
1985The fruit fly, Drosophila melanogaster, is the eukaryote most often used to detect mutations in germ cells. There are several facts which make this insect an attractive test system for screening chemical compounds for mutagenic activity. The short generation time of only 10 days, low cost of culture media, easy breeding of large numbers of animals with
F E, Würgler, U, Graf
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A combined testing protocol approach for mutagenicity testing
Mutation Research/Environmental Mutagenesis and Related Subjects, 1979The antischistosomal agent, hycanthone methanesulfonate (HMS), was employed to illustrate the utility of carrying out several mutagenicity tests in a single concurrent animal experiment. Several commonly used procedures that were successfully integrated into a multiple testing protocol included (1) metaphase analysis in bone marrow, (2) micronucleus ...
T H, Connor +3 more
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