pineal bodies usually contain a concretion called brain sand. concretion is mostly composed of phosphate and calcium carbonate. the concretion increases with age, however the origin and mechanism of formation of these materials are not clearly understood. calcified bodies are usually used as a guide in radiographic studies. due to the importance of these materials, this research was done on bra...

The pineal body of young calves was fed to albino rats beginning at the age of 3 weeks and extending over periods of from 3 to 6 weeks. Four litters of rats were used. Of these, fourteen rats were fed the pineal powder and ten were used as control subjects. Observations in regard to developmental changes and microscopic examination of the endocrine glands and reproductive organs were made. The ...

mied nearly in tbe center of the B brain in any mammal is a small white structure, sbaped somewhat like a pinecone, called tbe pineal body. ln man this organ is rougbly a quarter of an inch long and weighs about a tenth of a gram. The function of tbe pineal body has never been clearly understood. Now that tbe role of tbe tbymus gland in establishing tbe body’s immunological defenses bas been de...