CancersCellsinourbodiesarealwaysdividing,asnewcellsrepl...
问题详情：CancersCellsinourbodiesarealwaysdividing,asnewcellsreplaceoldones.36Cancercellsdividerapidly,andformgrowthscalledtumours(肿瘤）.Theycanspreadtotakeoverawholeorganandstopitworkingproperly.Ifcells...