Finlay, JA, Evans, CL, Day, JR, et al. Development of monoclonal antibodies specific for human glandular kallikrein (hK2): development of a dual antibody immunoassay for hK2 with negligible prostate specific antigen cross -reactivity. Urology, 51:804-9, 1998 68. Rittenhouse, HG, Finlay, JA, Mikolajczyk, SD, et al. Human kallikrein 2 (hK2) and prostate specific antigen (PSA): two closely related, but distinct, kallikreins in the prostate. Crit Rev Clin Lab Sci, 35:275-368, 1998 69. Kuus -Reichel, K, Kumar, A, Payne, J, et al. The precursor form of the human kallekrein 2, a kallikrein homologous to prostate specific antigen, is present in human sera and is increased in prostate cancer and benign prostatic hyperplasia. Clin Chemistry, 44:2115-19, 1998 70. Darson, MF, Pacelli, A, Roche, P, et al. Human glandular kallekrein 2 expression in prostate adenocarcinoma and lymph node metastases. Urology, 53:939-44, 1999 71. Lundwall A. Characterization of the gene for prostate-specific antigen, a human glandular kallikrein. Biochem Biophys Res Comm 1989;161:1151-1159.