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Cryopreservation of oocytes and embryos is a crucial step for the widespread and conservation of animal genetic resources. However, oocytes and early embryos are very sensitive to chilling and cryopreservation and although new advances have been achieved in the past few years the perfect protocol has not yet been established. All oocytes and embryos suffer considerable morphological and functional...
We analyse the role of the empty spiracles (ems) gene in embryonic brain and ventral nerve cord development. ems is differentially expressed in the neurectoderm of the anterior head versus the trunk region of early embryos. A distal enhancer region drives expression in the deutocerebral brain anlage and a proximal enhancer region drives expression in the VNC and tritocerebral brain anlage. Mutant...
The present studies were carried out in order to assess the protective effects of selenium against cadmium toxicity in pregnant hamsters. On the 8th day of gestation the females were dosed subcutaneously either with cadmium or with cadmium and selenium in the following doses (mg per kilogram of body weight): 0, 1 Cd, 1 Cd + 1 Se, 2 Cd, 2 Cd + 2 Se. In groups treated with cadmium decreased litter...
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