66 LABORATORY METHODS OF 



the small lymphocytes of the blood. The fat is al- 

 ways present in varying amounts, but is increased after 

 a meal. The cells of the lymph eventually become 

 the white blood cells. Osbnrn. 



DIFFUSE ADENOID TISSUE. 



In many positions throughout the body there are 

 found small nodes oi adenoid tissue located in the 

 tunica propria of mucous membranes, as in the lungs 

 and digestive tract. This variety of adenoid tissue is 

 called diffused. In some places this tissue is present 

 in small amounts, and fades away into the surrounding 

 tissue without presenting any line of demarcation. In 

 other locations this tissue is surrounded by a band of 

 white fibrous tissue, having dispersed it in a few 

 smooth muscle fibers. This band is called a capsule. 

 The node and band is called a lymph-follicle. When 

 these nodes occur in the course of a lymph vessel, they 

 are called lymph glands. These glands are usually 

 bean-shaped and the capsule sends down little bands of 

 white fibrous tissue, separating the gland into divisions. 

 These bands are called trabecula, and the divisions, 

 lobules. The trabeculae subdivide, forming the reti- 

 form tissue of the gland, in which are found the Mal- 

 pighi?n corpuscles of the lymph glands. The blood 

 vessels enter the capsules. The nerves of these glands 



