The thymus is an organ located in the upper section of the thorax, behind the sternum
. It is in this organ where certain cells
produced by the bone marrow develop, notably those which are involved in the body's defense system, such as T-lymphocytes (T for thymus, distinct from lymphocytes that develop in other organs, such as B-lymphocytes). They are developed, or "educated", by way of the thymic hormones secreted by this organ, notably including thymulin
. This organ is very active in a baby's development, vastly reduces in size, called involution, during the child's 2nd year.
Original article published by
. Translated by Jeff