Fig. 2From: Maternal selenium-supplementation at various stages of periconception period: influence on murine blastocyst morphology and implantation statusPhotomicrographs of good quality blastocysts (arrows) at 400x magnification. a Unsupplemented group (Group I), b Pregestation only group (Group II), c Pregestation-to-gestation group (Group III), and d Gestation only group (Group IV)Back to article page