Table 1.

Experimental design

Experiments		N° samples	Parameter evaluated
1	In vitro: effect of different amounts of PC on embryo development	705 oocytes	• Rate of embryos • Total cell numbers per blastocyst
2	In vivo: evaluation of endometrial cell proliferation, after in vivo PC administration	4 RBCs	Microscopic nuclear count of cells expressing Ki-67
3	In vivo: embryo implantation and development after intrauterine administration of PC	30 Treated RBCs 30 Control RBCs	Rate of pregnancy