the striking similarity in the structure of cell ? a with that of the small lymphocyte ( on the left of the text-figure ) , as well as the analogy of the process of its differentiation , at the expense of cells ? b and ? c , with the normal origin of the small lymphocytes , has led many investigators to accept the mesenchymal origin of the small thymus cells .
C0007589
differentiation
C0007634
the