منابع مشابه
Dominant lethality in Xenopus laevis induced with triethylenemelamine (TEM).
Adult male South African clawed toads, Xenopus laevis, were injected intraperitoneally with triethylenemelamine (TEM) dissolved in water over a dose range of 13-1,300 micrograms/kg or with water (controls). Mating of the treated males with untreated females was induced seven days later by injection of human chorionic gonadotropic hormone (HCG). Accumulated lethality one week after fertilization...
متن کاملRadiation-induced Dominant Lethality in Haploid and Diploid Sperm of the Wasp Mormoniella.
I N yeast, more dominant lethality is induced in diploid than in haploid vegetative cells (OWEN and MORTIMER 1956), and this is consistent with the observed increase in X-ray sensitivity of cells of higher ploidy in this organism ( MORTIMER 1958). To study dominant lethality with respect to ploidy in a higher organism, the parasitic wasp Mormoniella was selected. Stocks are available which prod...
متن کاملDominant maternal-effect mutations causing embryonic lethality in Caenorhabditis elegans.
We undertook screens for dominant, temperature-sensitive, maternal-effect embryonic-lethal mutations of Caenorhabditis elegans as a way to identify certain classes of genes with early embryonic functions, in particular those that are members of multigene families and those that are required in two copies for normal development. The screens have identified eight mutations, representing six loci....
متن کاملEvaluation of Radio-Protective Effects of N-Acetylcysteine on Radiation-Induced Lethality in Mice
Introduction It has long been known that ionizing radiation can lead to detrimental effects in normal cells. In this light, Radioprotective chemicals have been used to decrease morbidity or mortality caused by ionizing irradiation. This study aimed to evaluate the radio-protective effect of N-acetylcysteineagainst radiation-induced mortality in male mice. Materials and Methods 52 healthy mal...
متن کاملProtective effects of methanolic extract of Vicia cracca against hypoxia-induced lethality in mice
Vicia genus has 45 species in Iran. Many protective and biological activities have been reported from these species. In spite of many works, nothing is known about protective effect of V. cracca against hypoxia conditions. In this study, protective effects of V. cracca extract against hypoxia-induced lethality in mice were evaluated by three experimental models of hypoxia, asphyctic, haem...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1953
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.39.2.97