1. About“ Cell Biology The nih of usa(1988): What? “ What is popular in research today?” ◆3 kinds of diseases: cancer o cardiovascular diseases Forwhy? o infectious diseases: AIDS, 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 know1. About “Cell Biology” What? Forwhy? How to study? The NIH of USA(1988): “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；  cellularsenescence；  signal transduction；  DNA damage and repair. What we know//How we know