In the course of this study it was observed that the eccrine sweat glands of infants and children with cystic fibrosis were somewhat smaller than those of infants and children of the control group. The difference was not very significant, however, and probably warrants little emphasis. Serendipitous observations, not immediately related to the cystic fibrosis problem, showed that: (a) the eccrine sweat glands of adults were from 21/2 to 3 times as large as those of infants and children and (b) the eccrine sweat glands of Negro adults were appreciably larger than those of white adults.
CAWLEY EP, WEARY PE, HSU YT. Cystic Fibrosis and Eccrine Sweat Gland SizeWith Some Additional Serendipitous Observations on Sweat Gland Size. Arch Dermatol. 1963;88(4):403–408. doi:10.1001/archderm.1963.01590220035004