lactase
lak tays
- n any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
- The enzyme that does the cracking is lactase.
- Normal babies secrete lactase in abundance and thus have no difficulty in digesting mothers' milk, cows' milk or comparable substitutes.
- But most adults of European ancestry do produce lactase -- and that enzyme production seems to be linked to one single genetic variant, which, the study authors write, must have .