This organ is unusual in that it grows most quickly during fetal development, and begins shrinking during puberty. Composed of lymphocytes packed into a framework of reticular cells, the inner part is called the medulla and the outer part the cortex. The exact function of the organ is unclear, but it is related to the immune system, and much more important during childhood, as removal during childhood can cause T cell supression and reduction of 
This organ is unusual in that it grows most quickly during fetal development, and begins shrinking during puberty. Composed of lymphocytes packed into a framework of reticular cells, the inner part is called the medulla and the outer part the cortex. The exact function of the organ is unclear, but it is related to the immune system, and much more important during childhood, as removal during childhood can cause T cell supression and reduction of the spleen's white pulp. FTP, identify this lymphatic organ, located immediately below the sternum in front of the heart.
This organ is unusual in that it grows most quickly during fetal development, and begins shrinking during puberty.
{thymus}