Dr. Shirlyn B. McKenzie is distinguished teaching Professor Emeritus, Chair Emeritus at the University of Texas Health Science Center at San Antonio (UTHSCSA). Dr. Mckenzie is also a guest lecturer in management, hematology, and hemostasis. Editor of Clinical Laboratory Hematology, also a member of the Leadership Development Committee Chair of Texas Association for Clinical Laboratory Science. Shirlyn is also a member of the Board of Directors of the UTHSCSA Retired Faculty and Administrator Association.