TY - RPRT TI - Interactions between molecules (subfactors) released by different T cell sets that yield a complete factor with biological (suppressive) activity. AU - W Ptak AU - R W Rosenstein AU - R K Gershon PY - 1982 DO - 10.1073/pnas.79.7.2375 UR - https://pubmed.ncbi.nlm.nih.gov/6980420/ ID - 6980420 ER -