the compared observations carried out in the white body of the cephalopod todarodes sagittatus and in the bone marrow of the mammalian rattus rattus enabled us to note , especially on the electron microscope , some resemblances among the main cellular types , and namely between leucoblasts and promyeloblasts , between proleucocytes and promyelocytes and between leucocytes and granulocytes .
C0005953
bone marrow
C0033416
promyelocytes