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A MANUAL OF VETERINARY PHYSIOLOGY 



medulla. The capsule sends in bands of tissue (trabecules) which 

 divide the gland into compartments or alveoli, those in the cortex 

 being much larger than those in the medulla. The alveoli contain 

 a network of connective tissue, whose central part is finely 

 meshed (adenoid tissue), closely packed with lymph corpuscles, 

 and constitutes the glandular substance. The adenoid tissue does 



Fig. 84.— Diagrammatic Section of Lymphatic Gland. 



ad, Adenoid tissue containing lymph corpuscles. The region ad is normally 

 densely packed with lymph corpuscles, and constitutes the glandular 

 substance. The corpuscles are here drawn in scanty numbers, so as not to 

 obscure the central capillary v. In the adenoid tissue may be seen a 

 capillary bloodvessel v. Outside the core of adenoid tissue is the lymph 

 sinus or space Is, across which run branched nucleated corpuscles which are 

 simply an open network of connective tissue. Surrounding the whole is 

 the trabecular framework /. 



not occupy the entire alveolus, but fills up the centre, and is 

 maintained in position by branched, nucleated, connective tissue 

 corpuscles passing to the wall of the alveolus. In this way a 

 space or channel is formed between the central mass of adenoid 

 tissue and the wall of the alveolus ; this channel is known as a 

 lymph sinus (see Fig. 84). It is through the lymph sinuses of 



