4. Please explain what is "Ketone Bodies" and the role in metabolism. Why it is important in diabetes early detection. (10%)

6. Particulate matter (PM) pollution is a serious problem in environmental medicine. What are the definitions of PM10, PM2.5 and PM1.0? What are the compositions of these PMs? How PM10, PM2.5 and PM1.0 affect people's health? What are the relationship between these PMs and lung cancer and cardiovascular disease? (10%)