Task: Text Categorization
Input (English): In humans, it increases in weight in the first two years of life, and from then until puberty grows slowly to a weight of about 1.5 ounces. After puberty, it shrinks gradually and its lymphatic tissue is replaced by fat, though it also contains a few small areas of epithelial tissue known as Hassall's corpuscles. FTP, name this gland, which is located just beneath the upper portion of the sternum in almost all vertebrates, in which T cells mature and from which those cells derive their name.
Output (English): Science