1. Department of Cell Biology; Emory University; 465 Whitehead Biomedical Research Building, 615 Michael Street Atlanta Georgia
2. Biology Department; Brandeis University, Rosenstiel Basic Medical Science Research Center; 415 South Street Waltham Massachusetts
3. Departments Of Cell Biology and Biophysics; University of Texas Southwestern Medical School; 6000 Harry Hines Blvd. Dallas Texas
4. Department of Genetics; Cell Biology and Development, University of Minnesota Medical School; 6-160 Jackson Hall, 321 Church Street SE Minneapolis Minnesota