TY - RPRT TI - A disposable diffusion chamber system used to study immunoregulation by soluble factors. AU - S E Ullrich AU - S Zolla-Pazner PY - 1980 DO - 10.1016/0022-1759(80)90303-8 UR - https://pubmed.ncbi.nlm.nih.gov/7462643/ ID - 7462643 ER -