(1/3) Leland H. Hartwell - Born in Los Angeles, California, he received his doctorate in chemistry at MIT. He did most of his work studying the cell cycle and what makes it work, with the help of Hunt and Nurse. He found that there are more than 100 genes that control cell division and that there were stages in the cell division process. This discovery later helped scientists better understand how cancer works. For his work he received a portion of the Nobel Prize in Medicine for 2001. (1/3) R. Timothy (Tim) Hunt - Born in Neston in Wirral, Cheshire, he earned his doctorate degree in chemistry at the University of Cambridge. He found that the proteins called cyclins regulate the stages of the cell cycle. This discovery later helped scientists understand better how cancer works. For his work he received a portion of the Nobel Prize for Medicine in 2001. (1/3) Sir Paul M. Nurse - Born in Norfolk, England, he earned his doctorate degree in biochemistry from the University of East Anglican Norwich, England. During his research he found the main gene that controls the phases of the human cell cycle. This discovery later helped scientists better understand how cancer works. For his work he received a portion of the Nobel Prize for Medicine in 2001.