HI every one I need to write a letter for a professor and I need to show my interest in studying Cancer ? Please give me your suggestion.. Its only an email not a whole letter of interest..

What I've found fascinating about cancer is that it's not one thing -- it's a whole family of diseases that attack various organs. Lung cancer is different from breast cancer which is different from prostate cancer, which is different from brain cancer, etc. and each must be treated somewhat differently from any other. And each type of cancer has its own tumor marker, stage levels, and treatment protocols. Scientists and medical people have not begun to solve the mysteries that are the disease called cancer.