Today's guest is Dr. David Rasnick and he is medical researcher specializing in AIDS, cancer, protease inhibitors and clinical diagnostics. He was the first scientist to synthesis peptidyl-fluoromethanes, inhibitors of cysteine proteases used to destroy tissue related to arthritis, cancer and various parasites. In 1978, he helped establish the Diagnostic chemistry group at Abbott Laboratories and was a founder of Enzyme Systems Products and Prototek. After leaving Khepri Pharmaceuticals as a senior scientist, David, along with his colleague Dr. Peter Duesberg at the University of California at Berkeley, David further developed the aneuploidy theory of cancer, which pertains to chromosomal imbalance. Over the years he has been a sharp critic of the current dominant AIDS hypothesis, has been a former President of the group Rethinking AIDS and was a member of the Presidential AIDS Advisory Panel of South Africa started by President Thabo Mbeki.