NCIt definition : The largest mass of lymphatic tissue in the body. It consists of cells and vessels
contained within a capsule lined by mesothelium, from which trabecula enter the splenic
parenchyma. The parenchyma is supported by a framework of reticular fibers. The spleen
consists of two types of parenchymal tissue, the white and red pulp. The white pulp
is composed of elongated cords of compact lymphatic tissue containing nodules. The
red pulp is composed of pulp cords and splenic sinusoids.;