TY - RPRT TI - Complement component C3d-antigen complexes can either augment or inhibit B lymphocyte activation and humoral immunity in mice depending on the degree of CD21/CD19 complex engagement. AU - Youngkyun Lee AU - Karen M Haas AU - Dennis O Gor AU - Xuedong Ding AU - David R Karp AU - Neil S Greenspan AU - Jonathan C Poe AU - Thomas F Tedder PY - 2005 DO - 10.4049/jimmunol.175.12.8011 UR - https://pubmed.ncbi.nlm.nih.gov/16339538/ ID - 16339538 ER -