The Executive Committee reviews all membership applications, each of which includes a letter from the applicant stating both how his/her research synergizes with the Center and his/her expected usage of the Research Core, as well as his/her CV. Researchers interested in applying for membership should contact the Center Administrative office for information (Julie Stark, 1-100 BSB, 335-7744; julie-stark@uiowa.edu). Membership in the P30 Center falls into two categories: 1) Full Membership and 2) Associate Membership. The criteria for the assignment of an investigator into one of these categories, and a description of the privileges associated with appointment to each, are as follows: