Electron microscopic studies of lumbar lymph nodes in bactrian camels (Camelus bactrianus)

The results show that the lumbar lymph nodes were located in the posteromedial aspect of the kidneys, and comprised of capsule and parenchyma. The trabeculas, which were slight, could not divide the parenchyma into obvious lobules. The parenchyma contained lymphatic nodules, dense anodular lymphoid tissue and diffuse lymphoid tissue. Numerous lymph nodules located among the parenchyma solitarily were slightly round and different in size. A layer of lymphatic endothelial cells lined marginal and intermediate sinuses, interestingly, numerous erythrocytes were observed in the periphery of the parenchyma and hemal sinuses inside the parenchyma. This study has shown that the lymph nodes of the camel are distinctively different from the other mammals.