However, in the prostatic cancer cells, the basal expression level of the B3GALT1 gene was from moderate (0.05% of GAPDH) in DU145 cells to very high in the other two prostatic cancer cells, i.e. 0.324% of GAPDH in PC3 cells and 0.334% of GAPDH in LNCaP C-81 cells (Fig. 6), suggesting that this enzyme is not a limiting factor for the synthesis of sLea in these cells. The gene discussed is GAPDH; the disease is prostate carcinoma.