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The aim of the studies was to determine the sex of cattle embryos by identifying Y-chromosome specific DNA sequence using the polymerase chain reaction (PCR). The sex of embryos fertilized in vitro and produced from the stage 2b up to hatched blastocyst was determined. Also the comparison of whole embryos and biopsed parts of them was performed. A total of 336 embryos was used. The sex of the embryos...
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