"Tumor incidence" refers to the rate or frequency at which tumors or abnormal cell growths occur in a certain population or group of individuals. It essentially measures how common or widespread tumors are within a particular group. Full definition
Instead, «you are likely seeing variation of normal tumor incidence in a small population of rats,» he said. (dotearth.blogs.nytimes.com)
One study that administered strawberries to mice with colon cancer found tumor incidence to decrease as supplementation of strawberries increased. (groundedorganic.com)
In the future, it is our hope that the use of probiotics - containing [supplements] would be a potential chemopreventive for normal humans, while the same type of microbiota would decrease tumor incidence in cancer susceptible populations.» (sciencedaily.com)