TY - RPRT TI - Primitive complement system--recognition and activation. AU - Teizo Fujita AU - Yuichi Endo AU - Masaru Nonaka PY - 2004 DO - 10.1016/j.molimm.2004.03.026 UR - https://pubmed.ncbi.nlm.nih.gov/15159055/ ID - 15159055 ER -