Abstract
Despite significant progress in the study of the subtle mechanisms of interaction between cellular and molecular elements in immune responses, the general structure of the organs of the immune system, including the lymph node, has not been sufficiently studied, in particular in large farm animals. The lymph nodes of sexually mature camels have been studied anatomically and morphologically and advanced studies conducted using an X-ray system and a computer densitometer scanner with injection of a contrast medium. The topography and characteristics of the morphometric parameters (absolute and relative mass, linear measurements, volume) of certain somatic and visceral lymph nodes were determined. The mass of the lymph nodes studied varies according to the location and the interest of the organ in the satellite defense of the lymphoid system, For part of the x-ray examination of the lymph nodes, organs of large inguinal and axillary shape were selected after passing through a solution of tetraethyl-4,4-diamino-triphenylmethane oxalate, the lymph vessels were dilated and darkened, then iodine injections were made into the afferent lymphatic vessel of two lymph nodes; they were placed on the radiological cassette, a photograph taken on conventional radiography, for computer densitometer, the examination was made without preparation of the organs. A capsule encompasses the parenchyma of the lymph node, whose internal structure is composed of different zones, cortical, paracortical and medullary, on the one hand the lymphatic vessels were very clear especially with the conventional radiography with preparation of the organs, while the computer densitometer clearly revealed the deep texture of the parenchyma, basing it on the intensity of emission saturation from the use of computer densitometer.
Highlights
Lymph nodes are peripheral organs of the lymphatic system (Rebelatto, 2018)
The resolution imaging capacity in vitro was more beneficial for the study of the lymph node without having it incised by the standard method which involves the elimination of adipose tissue, which could lead to damage to the organ and keep its macroscopic aspect, which could constitute the base of the anatomical structure
By exploring the dromedary lymph nodes by the CT in vitro, we generally found that the sub capsular periphery is very clear, the cortical zone is very developed, on the other hand the medullary zone is less concentric with the appearance of two medullary areas in a single lobule, the afferent lymphatic vessel is clearly visible, but the efferent lymphatic vessels are less visible
Summary
Lymph nodes are peripheral organs of the lymphatic system (Rebelatto, 2018). They serve as a biological filter through which the lymph flows from the organs and parts of the body. Lymph nodes provide immunological protection by cleaning the lymph from pathogens and foreign agents (Willard-Mack, 2006). They deposit lymph, perform an antigen-dependent proliferation and differentiate T and B lymphocytes into effector cells. Proliferation of lymphocytes and plasma cells occurs and, antibodies enter the lymph (Elmore, 2006)
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