TY - RPRT TI - Permissive recognition during positive selection. AU - T J Pawlowski AU - M D Singleton AU - D Y Loh AU - R Berg AU - U D Staerz PY - 1996 DO - 10.1002/eji.1830260419 UR - https://pubmed.ncbi.nlm.nih.gov/8625978/ ID - 8625978 ER -