Additional analysis of prostate tumour specimens was focused on expression of AMACR–gene encoding an enzyme considered to be overexpressed in PC [25,26], yet with many contradictory data published [27,28], which occurred to be slightly lower in PEPCs than in tissue samples (0.376±0.048 compared with 0.556±0.028; Figure 4B). The gene discussed is AMACR; the disease is prostate neoplasm.