TY - RPRT TI - Two forms of the human prothrombin converting enzyme (active factor X). AU - D L Aronson AU - A J Mustafa AU - J S Finlayson PY - 1971 DO - 10.3181/00379727-137-35769 UR - https://pubmed.ncbi.nlm.nih.gov/5138452/ ID - 5138452 ER -