Advaxis, Inc. is a biotechnology company that uses a modified infectious microorganism to activate the immune system to treat cancer, infectious disease or allergic syndromes. Based upon over a 10 years of innovative work done by Yvonne Paterson, Ph.D., Professor of Microbiology at the University of Pennsylvania, it has been found that the unique microbe Listeria monocytogenes is capable of stimulating numerous aspects of the immune system simultaneously; coordinating innate, humoral (antibody), and cellular adaptive immune responses in an extremely effective response to existing cancers and other diseases.