TY - RPRT TI - The structural basis of the multiple forms of human complement component C4. AU - K T Belt AU - M C Carroll AU - R R Porter PY - 1984 DO - 10.1016/0092-8674(84)90040-0 UR - https://pubmed.ncbi.nlm.nih.gov/6546707/ ID - 6546707 ER -