Observe myofibroblasts scattered between fibroblasts inside the capsule and within the connective tissue of trabeculae. Within the trabeculae identify trabecular arteries, that arise from the splenic artery and bring the blood to the red pulp. Accompanied trabecular veins drain blood from splenic sinusoids and converge into splenic vein. The staining of the red pulp is due to the abundance of red blood cells. In the red pulp identify sinusoids and splenic cords.
Some sinusoids contain blood, while others are empty.
The sinusoidal lining cells appear in cross sectioned sinusoids as densely packed cuboidal cells. In a tangential section through the wall of a sinusoid, the long narrow shape of the lining cells can be observed. Many white blood cells are fixed while in the process of moving across the sinusoidal wall. The basophilic white pulp is composed of lymphoid tissue. In the white pulp identify the central artery which is found within most splenic nodules.