Fig. 3From: Maternal selenium-supplementation at various stages of periconception period: influence on murine blastocyst morphology and implantation statusPhotomicrographs of fair quality blastocysts (arrows) at 400x magnification. a Unsupplemented group (Group I), b Pregestation only group (Group II), and c Pregestation-to-gestation group (Group III)Back to article page