the development of small intestinal enzymes ( lactase , acid- and hetero beta-galactosidases , cellobiase , maltase , trehalase , and sucrase ) was studied from 18 days after conception until birth in 24 rabbit fetuses , and during the postnatal period in 15 newborn , juvenile , and adult rabbits .
C0083183
lactase
C0005220
beta-galactosidases