Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
mutation cells tumors line presentation morphology formation metastasis cancer tumor replication cell division cycle mutagens virus viral infection infectious agents helicobacter pylori human papilloma hpv carcinogen nitrate preservatives chemicals toxic ray radiation rays science health medical biology system anatomy structure medicine care genetic blood disease microbiology healthy body vector diagram mutated caused