Peripheral complement C4 protein in schizophrenia: Association with gene copy number and immune cell subtypes. Kalinowski A, Macaubas C, Guo H, Anker LA, Wakeham DE, Ho M, Pattni R, Bayram B, Sharma S, Liliental J, et al. Proc Natl Acad Sci U S A. 2026 May 19; 123(20):e2536376123. PMID: 42113976. Abstract CommentRecommendBookmarkWatch