All the following markers are expressed on the surface of T-cells at some stage of development except:
(A) CDIa (B) PAX5 (C) CD 34 (D) Tdt
(B) Answer- B. PAX5PAXS is a B-cell transcription factor, essential in normal B-cell lymphopoiesis. T-cell never express PAXS throughout its development CD-1a, CD34 and Tdt are expressed on T-cells.T cell - CDl, CD2, CD3, CD4, CD5, CD7, CD8, cCD3, lymphoid TdT.