CD21


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CD21

a type I transmembrane protein found on B cells, follicular dendritic cells, pharyngeal and cervical epithelial cells, some thymocytes, and some T cells that plays a role in signal transduction; expressed in hairy cell leukemia, B-cell lymphoma, and some T-cell acute lymphocytic leukemias.
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Periferik kanda CD19 ve CD21 molekul ekspresyonu dort renkli akis sitometri cihazi (FACSCalibur, Becton Dickinson Biosciences, San Jose, California, USA) ile degerlendirildi.
In addition to the conventional endothelial markers, the lymphatic endothelium shows strong immunoreactivity for D2-40 and is negative for CD21 and CD8.
Lay and colleagues induced the expression of CD21 in T-lymphoma cell lines and subsequently infected these cells with EBV.
In particular, the expression of CD21, CD35, Ki-M4p, and Ki-FDRC1p antibodies must be shown.
The drill intercepts from holes CD21, CD22, and BCRC2056correlate well, have similar geometry and occur to the west of theporphyry/shale contact (see attached cross section).
cards are made based on chips Philips A Desfire 4k or Desfire Ev1 CD21 and ST Microelectronics A and are providing only non-contact mode (Full Contactless).
10) Distorted follicular dendritic networks may be highlighted by CD21, CD23, or CD35.
Immunophenotypically, the lymphoid follicles express the B cell markers (CD20 and CD79a), while germinal centers express CD10 and Bcl6; moreover, there are well-maintained follicular dendritic cell networks (defined by CD21 and CD23).
In some cases, the lymphomatous infiltrate may result in architectural destruction with concealment of remaining germinal centers; however, the presence of cryptic germinal centers can be accentuated by the immunohistochemical demonstration of follicular dendritic cells with an antibody against CD21 or CD23.
CD21 or CD23 is also helpful to highlight expanded follicular dendritic cell meshworks that are present in angioimmunoblastic T-cell lymphoma and not in the small cell variant of ALCL.
CD21 may show wisps of residual follicular dendritic-cell meshwork, the remnants of the prior nodules of NLPHL (Figure 6, D).