西北农林科枚大学 Kb6t℃Ell Biology” The NIH of USA: What? "What is popular in research today? ◆3 kinds of diseases: ◇cancer cardiovascular diseases For why? infectious diseases:AlDS,hepatitis ◆5 research fields: ◇cell cycle control; How to ◇cell apoptosis; cellular senescence: study? signal transduction; DNA damage and repair. What we know//How we know Northwest A&F University About “Cell Biology” What? For why? How to study? The NIH of USA: “What is popular in research today？”  3 kinds of diseases ：  cancer  cardiovascular diseases  infectious diseases：AIDS，hepatitis  5 research fields ：  cell cycle control ；  cell apoptosis；  cellular senescence；  signal transduction；  DNA damage and repair. What we know//How we know