[T-lymphocyte migration into the bone marrow in the initial period of the stress reaction]

Six to nine hours after the beginning of stress-reaction caused by a 6-hour immobilization there appeared, in the bone marrow of CBA mice, cells with the antigenic (theta-antigen) and functional (cells-helpers) characteristics of T-lymphocytes. Migration of T-lymphocytes into the bone marrow was regarded as the mechanism of increase in nonspecific resistance of the organism.