For example, certain microorganisms (for example, fungi) associated with pickled foods may enhance the production of N - nitroso compounds with potential carcinogenic properties [164]. (jphysiolanthropol.biomedcentral.com)
Other dyes, including several variations of the color orange, have been found to contain carcinogenic properties. (estella-nyc.com)
As our aim was to indicate general tissue specific carcinogenic properties, we used all the known subtypes of these cancers, including (1) hyper mutated and non-hypermutated colon cancers; (2) lung adenocarcinomas, large cell carcinomas, and squamous cell carcinomas (3) HER2 positive, basal, luminal A and luminal B breast cancers; and (4) hepatitis B or hepatitis C, cirrhosis or other agent causing hepatocellular carcinoma data. (nature.com)