<prompt> The marker for B lymphocyte is?CD 19CD 68CD 34CD 4  <response>: Answer is A CD 19 : CD 19 is a marker for B lymphocytes. Markers for various lineage Lymphoid lineage B Lineage T Lineage CD79a CD3 mcyt cyt IgM Anti-TCR cilfl cyt CD22 Anti-TCR yc5 CD19 CD2 CD10 CD5 CD20 CD8 CD10 TdT TdTT CD24 CD7 CD1a Myeloid lineage Myeloid Lineage Anti-MPO monoclonal MPO cytochemistry CD117 CD13 CD33 CD65s Anti-MPO polyclonal CD14 CD15 CD64 