Experiment 2, different concentrations (0, 1%, 5%, 10%, 20% and 50%)of OCS were used to investigate an optimal concentration for IVC of early stage embryos.

• 试验2，比较不同浓度的OCS（0，1%25，5%25，10%25，20%25，50%25）对牛早期胚胎体外发育的影响。