D Zhang, P Shankar, Z Xu, B Harnisch, G Chen, C Lange, SJ Lee, H Valdez, MM Lederman, J Lieberman. (2003) " Most antiviral CD8 T cells during chronic viral infection do not express high levels of perforin and are not directly cytotoxic. " Blood 101. 226-35 PMID: 12393740 DOI: 10.1182/blood-2002-03-0791 | Abstract and Keywords