Fig. 1
From: Maternal age affects equine day 8 embryo gene expression both in trophoblast and inner cell mass
Effect of embryo size on RNA yield and gene expression in equine embryos. a Green circles represent embryos from young mares (YM) and yellow squares represent embryos from old mares (OM). The used relation is exponential. b Biplot graphics representing principal component analyses of differentially expressed genes in inner cell mass and trophoblast of embryos collected in YM or OM. Embryo were grouped according to maternal age (YM or OM) and their diameter (< 1100 μm = small; > 1100 μm = large). The top 20 variables contributing to the axis formation were represented