C3 and fetal growth restriction: Compared with NBW fetuses, expression of thioredoxin (TXN, Spot F10), peroxiredoxin 6 (PRDX6, Spot F218, F79), glucose-regulated protein (GRP94, Spot L144) and alpha-crystallin B chain (CRYAB, Spot L135) was higher, while expression of latexin (LXN, Spot F265), complement component 3 (C3, Spot F215), immunoglobulin gamma (IgG, Spot L323), and guanine nucleotide binding protein (GAQ, Spot F76) was lower in the IUGR endometrium, as compared with the NBW group.