Abstract
Summary
Rabbit lymphatic tissue was placed on the CAM of the developing chick embryo and after incubation of 3 or more days evidences of successful grafting were obtained. Histologic sections of the tissues involved showed:
1. Appearance of many capillaries filled with nucleated erythrocytes.
2. Degeneration of the lymphocytes in the implanted tissue.
3. Appearance of bands of reticulum cells in a layer between the implanted lymph node and the CAM.
4. On occasion fresh mature lymphocytes appeared, always in proximity to the reticulum cells in the direction of the CAM. These cells occurred either in clusters at the periphery of the band of reticulum cells or in nests among the cells.
We are indebted to Dr. Philip R. Custer of the Presbyterian Hospital in Philadelphia for histologic consultations in the course of this work.
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