Yoshida, Nobuya CXCR4 expression on activated B cells is downregulated by CD63 and IL-21. [electronic resource] - Journal of immunology (Baltimore, Md. : 1950) Mar 2011 - 2800-8 p. digital Publication Type: Journal Article ISSN: 1550-6606 Standard No.: 10.4049/jimmunol.1003401 doi Subjects--Topical Terms: AnimalsAntigens, CD--biosynthesisB-Lymphocyte Subsets--cytologyCells, CulturedDown-Regulation--immunologyEndocytosis--immunologyEndosomes--immunologyInterleukins--physiologyLymphocyte Activation--immunologyMiceMice, Inbred C57BLMice, KnockoutPlatelet Membrane Glycoproteins--biosynthesisReceptors, CXCR4--antagonists & inhibitorsTetraspanin 30Interleukin-21