C1QA and neoplasm: To further verify the relationships among C1qA, tumor growth, and the Rituximab resistance of DLBCL, Farage/S cells transfected with shCtrl (S-shCtrl), Farage/S cells transfected with shC1qA (S-shC1qA), Farage/R cells transfected with empty vector (R-Vector), and Farage/R cells transfected with a C1qA overexpression vector (R-C1qA) were used to generate mouse xenograft models.