News Life How salmonella helps kill cancer cells Bacterium stimulates the immune system to ‘see’ tumors, could lead to vaccine By Gwyneth Dickey August 11, 2010 at 1:37 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print When a bad bacterium infects tumor cells, it can signal the body to fight the deadliest form of skin cancer. Scientists already knew that diarrhea-causing Salmonella typhimurium helps the immune system recognize melanoma, but a paper in the Aug.