TY - RPRT TI - C4a: the third anaphylatoxin of the human complement system. AU - J P Gorski AU - T E Hugli AU - H J Müller-Eberhard PY - 1979 DO - 10.1073/pnas.76.10.5299 UR - https://pubmed.ncbi.nlm.nih.gov/291947/ ID - 291947 ER -