Beckman Cd20-Unlb, H299, 0.25 Mg, Asr

Beckman the cd20 antigen (bp35) is an integral non-glycosylated membrane protein with four transmembrane domains. three isoforms (33, 35 and 37 kda) result from differential phosphorylation within the cytoplasmic domain. the cd20 molecule is present on all normal b lymphocytes from peripheral blood, lymph node, spleen, tonsil and bone marrow but is absent from plasma cells. it is expressed naturally but at low density on a subset of peripheral blood t lymphocytes. - BKMPFZ (Additional S&H Or Hazmat Fees May Apply)