[Dermoid cyst of the spleen].

The case report of a 14-year old girl is given. In her spleen of the weight of 1580 g an irregular cyst of glossy inner surface and with striking trabeculation developed. It was filled with clear greenish liquid.

[Reactivity of antibodies to collagen types I to IV and antibodies to chondroitin sulfate in the spleen].

Antibodies to collagen type I and III reacted negatively, antibodies to collagen type IV positively with reticulin, trabeculae and circumferent reticulum of lymphatic sheaths, poorly positively with capsula, strongly positively with subcapsular zone. Antibodies to collagen type II reacted positively with capsula, poorly with subcapsular zone, strongly with sinus wall and poorly with trabeculae. They did not react with circumferent reticulum of periarterial lymphoid sheaths.

The use of lectins identified with specific antibodies in lectin histochemistry of NZB/W F1 mouse kidney.

The affinity of Helix pomatia, peanut, Pisum sativum, soy bean, and wheat germ agglutinins to various nephron parts of NZB/W F1 mice was different and is assumed to be age dependent. The affinity of Pisum sativum agglutinin to basal membranes of small renal vessels increased with the age of NZB/W F1 mice. The wheat germ agglutinin bound to structures with alkaline phosphatase activity.

[Structural basis of appendiceal function in rabbits].

Enzymo-, immuno- and lactin-histochemical methods were used to study the structure of the rabbit appendix wall. The value of some structural components in the function of this part of the intestine is discussed. Some findings were documented electronmicroscopically.

[Structural basis of the spleen in rats].

The basic function of the spleen in the rat, similarly as in man, is to cleanse the blood of damaged old particles of the body itself, but also of foreign particles. To fulfill this function, the spleen is equipped with the white and red pulp with a specific structure of blood circulation. In an open system of circulation, blood from the arterial terminals opens into the cords of the red pulp, where it is adequately processed.