Level of expression measured with microarrays of WAP and alpha, beta and gamma casein in mammary glands from non-transgenic BALB/c mice, pregnant mice, cell lines derived from tumors in HER-2/neu transgenic mice (1A-1E), mammary glands from HER-2/neu transgenic nt mice at different time points, and from vaccinated mice (Triplex, Prime-boost). Both vaccinations increase the level of expression of these genes, which are normally related to pregnancy and lactation.