2.5. Experimental design
In Experiment 1, the effects of sericin on preimplantation
development and quality of embryos were assessed.
After 24 h of IVF, only two-cell-stage embryos
were selected and cultured individually for 7 days in
CR1aa medium supplemented with 0.1, 0.5, and 1%
(w/v) sericin. As controls, embryos were cultured individually
in CR1aa medium without sericin.