Fetal liver TfR and ferroportin expression. Fetal liver protein expression of TfR (A &B) and ferroportin (C &D) proteins in Rowett Hooded Lister (A &C) and Wistar (B &D) rats exposed to a control or low iron diet prior to and during pregnancy. Data are presented as means ± s.e.m. for n = 16–19 per group. Protein expression is normalised to tubulin expression. Representative sample blots are shown.