Comparative results of ZIP1 immuno-positive glands of tissue sections from subjects described in Table 1. A. Summary of glands that exhibited a positive Zip1 reactivity. The number of cases is shown in each bar. B. The number of cases in which the glandular epithelium contained cells that exhibited a ZIP1 score >+ (more than 10% of the cells comprising the acini). The differences in A and B between BPH glands and adenocarcinomatous glands are significant, P < 0.01.