TY - RPRT TI - Structural transitions of complement component C3 and its activation products. AU - Noritaka Nishida AU - Thomas Walz AU - Timothy A Springer PY - 2006 DO - 10.1073/pnas.0609791104 UR - https://pubmed.ncbi.nlm.nih.gov/17172439/ ID - 17172439 ER -