The greatest attrition occurs between day 3 and days 5 or 7 (the blastocyst stage). However, not all embryos will reach the blastocyst stage, which represents an embryo with the highest likelihood ...

As we approach the breeding season, cows and heifers are faced with a variety of stressors from the metabolic pressure of providing for a calf to changes in environment. Stress during early pregnancy ...

Researchers stained the cells of a mouse embryo that had its tissue cleared so they could watch its nervous system and blood vessels develop in tandem. This 13.5-day-old embryo, viewed under a ...