Cell division, a fundamental biological process that occurs in all living organisms, is governed by a highly sophisticated and dynamic chain of events involving hundreds to thousands of proteins working together day and night. One malfunctioning protein is often enough to cause a breakdown of normal cell division, leading to cell death, developmental defects and uncontrolled proliferation. The research interest of Dr. William Tsang focuses on a specialized subunit within a cell called the centrosome that plays a pivotal role in cell division. The centrosome contains many different proteins, and current research is beginning to unravel the biological functions of these proteins, along with their role in cell division and their connection to human disease such as cancer.