In the absence of supplemental T, AR protein persisted in 10 of 15 CWR-R1-ARΔTR tumors (tumor numbers 28, 29, 31, 32, 34, 35, 38, 39, 43 and 44), and endogenous AR was not detected in 5 tumors that also did not express ARΔTR (samples 24–27 and 33) (Fig. 10B). The gene discussed is AR; the disease is neoplasm.