TY - RPRT TI - CD19 expression levels regulate B lymphocyte development: human CD19 restores normal function in mice lacking endogenous CD19. AU - S Sato AU - D A Steeber AU - P J Jansen AU - T F Tedder PY - 1997 UR - https://pubmed.ncbi.nlm.nih.gov/9144478/ ID - 9144478 ER -