Evidence supporting that cancer results from genetic changes in multiple genes Discussion
Evidence supporting that cancer results from genetic changes in multiple genes Discussion
1. Epidemiological studies
1. Epidemiological Studies
500 Prostate Stomach Skin 8 Rectum 100 Pancreas E50 Esophagus 10 g 5 0.5 0.1 20 30 40 50607080 Age (years)
2. Intermediate Stage Cancer Studies(Colon Cancer)
2. Intermediate Stage Cancer Studies (Colon Cancer)
Normal colon cells gene(chromosome 51 A polyp on the colon wa目l Activation of K A class ll ac (benign) g ss of Dcc A class ill ade Loss of p53 gene(chromosome 17) A carcinoma ( malignan tumor) devel Other change Poly colon Normal colon Basal lamina Tumor cells invade metastasis to ocour ng