The Rôle of the Reticulo-endothelial System in Immunity

The R()le of the Reticulo-endothelial System in Immunity. W. the Action of Diphche~ia Toxin in Splenectomized and Blocked Mice

T H E Influence of Roentgen Radiation on Immunity to Shope Fibroma Virus'

Various authors have demonstrated that a general exposure of mice and rats to roentgen radiation will decrease their resistance to subsequent inoculation of a tumor or a Ieukosis. A review of these communications has been given in a recent publication (1938). Moreover, it has been shown (1937, 1938) that the effect of the radiation is probably due to a delay in the development of immunity to fo...

The Relation of the Reticulo-endothelial System to the Blood Platelet Count

1. So called blockade of the reticulo-endothelial system results in a marked increase in the platelet count. 2. The count rapidly becomes very high, shows a sharp partial recoil and then a gradual diminution even though the blockade be continued. 3. The mechanism regulating the number of platelets is a complicated one. 4. Apparently phagocytosis by cells of the reticulo-endothelial system is no...

An Increase in Reticulo-endothelial Cells in Outlying Bone Marrow Consequent upon a Local Increase in Temperature

In adult mammals and birds there is a great quantitative difference in the reticulo-endothelial system content of the bone marrow of central bones as compared with distal outlying bones. Experimental procedures reported in the accompanying communication effecting development and increase of hemopoiesis in inactive yellow marrow also effect a reticulo-endothelial cell increase.

The Relation of the Reticulo-endothelial System to the Formation of Amyloid

The facts presented suggest strongly that reticulo-endothelial cells are actively concerned in the formation of amyloid. Points in favor of this theory are as follows: 1. The appearance of amyloid in places where reticulo-endothelial cells are normally present, sometimes in very large number. 2. The formation of early amyloid in the small solitary patches, which suggests its local formation. 3....