Afferent lymphatic vessels 



Network of lymph- 

 atic vessels 



Young connective 

 tissue 



Lymphoid tissue 



Lymphatic vessel Blood vessels Lymphatic vessel 



B 



Afferent lymphatic vessels 



Peripheral lymph 



sinus 

 Capsule 



Trabecula 



Reticular tissue 

 cells 



Lymph sinus 



Peripheral sinus 



Lymph sinus 



Capsule 



Secondary nodule 



Medullary cord 



Trabecula 



Efferent lymphatic vessels 



FIG. 280. 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) 



