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Microarray gene expression experiments often consider specific developmental stages, tissue sources, or reproductive technologies. This focus hinders the understanding of the cattle embryo transcriptome. To address this, four microarray experiments encompassing three developmental stages (7, 25, 280 days), two tissue sources (embryonic or extra-embryonic), and two reproductive technologies (artificial...
The average number of oocytes collected by ovum pick up (OPU) from Bos taurus cattle is <8 per live donor. The objective was to determine whether development of small numbers of cattle embryos (produced by OPU and IVF), was enhanced by including “helper” embryos, produced from abbatoir-derived oocytes and embedded in agarose. Oocytes were from abbatoir-derived ovaries (Experiments 1 and 2) or OPU...
We tested the effectiveness of combined DNA vaccines encoding antigens Ag85B, MPT64 and MPT83 from Mycobacterium tuberculosis on cattle. Our results showed that calves treated with combined DNA vaccines in the presence of dimethyldioctyldecyl ammonium bromide (DDA) or saline elicited a strong gamma interferon (IFN-γ) response 1 or 2 months after the third vaccination. All three antigens induced substantial...
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