In 2002 Dr. Scott Pomeroy and Dr. Todd Golub use microarray gene expression profiling to identify different types of brain tumors and predict clinical outcome. This allows radiation and chemotherapy to be tailored to kill cancer cells while leaving healthy tissue alone. Also in 2002, Dr. Nader Rifai helps to author a paper showing that cholesterol levels and LSD use are less accurate predictors of predisposition to strokes and heart attacks then presence of a C-reactive protein that can be found in blood test results.