نتایج جستجو برای: mutagens
تعداد نتایج: 2088 فیلتر نتایج به سال:
Chinese hamster cells treated with such chemical mutagens as 4-nitroquinoline 1-oxide, captan, acridine dyes, and Cytoxan developed diplochromosomes, showing the induction of endoreduplication. This indicates that these mutagens not only cause damage to genes but also cause changes in ploidy. In this study, the maximum ratio of endoreduplicated cells, 6.6%, was obtained when cells were treated ...
More than two centuries have been passed since the chromosomes have been firstly observed in plant cells by Nageli in 1842. During this long period, chromosomes have been discovered in human cells and well recognized as a source of genes locations. The effects of chemicals and environmental pollution in human health and caners became an interested field of studying diver mutagens and their role...
ŠMERÁK P., ŠESTÁKOVÁ H., POLÍVKOVÁ Z., BÁRTA I., TUREK B., BÁRTOVÁ J., LANGOVÁ M., ANDĚL M. (2002): Antimutagenic effect of ellagic acid and its effect on the immune response in mice. Czech J. Food Sci., 20: 181–191. Using the Ames bacterial mutagenicity test and an in vivo micronucleus test, we investigated the antigenotoxic effect of ellagic acid on the genotoxicity of three mutagens: amino-m...
The sensitivity of a polA strain to the antibacterial activity of mutagens and carcinogens may be increased by inserting one or both of the following characteristics, a lexA mutation or the R391 bacterial plasmid. The effects of the lexA mutation and the plasmid appear to be additive. The differential sensitivity of a polA lexA (R391) strain could be adapted as a preliminary screening test for ...
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