Capillary migration of the cells of three murine tumours

Cells of a murine myeloid leukemia, a lymphoid leukaemia, and a reticulosarcoma, were tested for their ability to migrate from capillary tubes. As compared with normal cells from the speeen, bone marrow, lymph nodes or peritoneal exudate, tumour cells migrated rather poorly. When present, the migration could be attributed to the existence of normal cells in the suspension of tumour cells. No correlation has been found between the migratory behaviour and the mode of growth of the tumour "in vivo".