Institution: | a Department of Microbiology and Immunology, Kimmel Cancer Center, Thomas Jefferson University, 233 South 10th Street, Philadelphia, PA 19107, USA b Cell Engineering Laboratory, La Paz Hospital, Edificio Maternidad Planta 1, Paseo Castellana 261, Madrid 28046, Spain c Department of Cellular and Structural Biology, Children’s Cancer Research Institute, University of Texas Health Science Center, San Antonio, TX 78229, USA d Stem Cell Program and Departments of Developmental and Cell Biology and of Biological Chemistry, Hewitt Hall, University of California, Irvine, CA 92697, USA |