现已证实人类血清总补体(CH_(50))有冷活化现象,将患者血清放在4℃两小时有活化,而在37℃却活化甚微,故称冷活化现象。日本学者曾发现5份的肝病血清CH_(50)在4℃活化较健康者要快。本文作者也发现7例。这些偶然发现的少数病例很 It has been confirmed that human serum total complement (CH_ (50)) has a cold activation phenomenon, the patient serum was activated at 4 ° C for two hours, but little activation at 37 ° C, so cold activation was reported. Japanese scholars have found that five copies of liver disease serum CH_ (50) activated at 4 ℃ faster than healthy people. The authors also found 7 cases. These are the few cases of accidental discovery