Expression patterns of milk protein genes. The main graph shows genes whose expression increases more than two-fold at parturition. The inset shows genes with casein-like expression patterns whose mRNA increases mainly during pregnancy. All data are normalized to the level of expression at day 17 of pregnancy (P17). ADPH, adipophilin; MFGM, milk fat globule-EGF-factor; PTHrP, parathyroid hormone related protein; WAP, whey acidic protein; WDNM1, Westmeade DMBA8 nonmetastatic cDNA1; xanthine DH, xanthine oxidoreductase.