Description
C1s/Complement component C1s, a serine protease and B chain, forms C1 with C1q and C1r, initiating the classical complement pathway. Activated by C1r, C1s then activates downstream components C2 and C4, crucially driving the complement system cascade. C1s/Complement component C1s Protein, Human (HEK293, His) is the recombinant human-derived C1s/Complement component C1s protein, expressed by HEK293, with C-His labeled tag