Afferent lymphatic vessels 



Network of lymphatic, 

 vessels 



Young connective tissue- 



Lymphoid tissuei 



Peripheral lymph sinus 



Capsule 



Trabecula 



Reticular tissue cells 



Lymph sinus 



Lymphatic vessel Blood vessels Lymphatic vessel 



B 



Afferent lymphatic vessels 



Peripheral sinus. 



Lymph sinus- — "^ 



Capsule- 



\taft/r ^^ 



■Secondary nodule 



Medullary cord 



Trabecula 



Efferent lymphatic vessels 



Fio. 289. — Diagrams representing four stages in the development of lymph glands. The earlier stages 

 '■ are shown on the left side of each figure (Lewis and Stohr). 



