
FILE - This 1974 microscope image made available by the Centers for Disease Control and Prevention shows changes in cells indicative of adenocarcinoma of the prostate. (Dr. Edwin P. Ewing, Jr./CDC via AP)

FILE - This 1974 microscope image made available by the Centers for Disease Control and Prevention shows changes in cells indicative of adenocarcinoma of the prostate. (Dr. Edwin P. Ewing, Jr./CDC via AP)