thirty-three lactose-maldigesting guatemalan subjects , 16 children and 17 adults , were challenged with oral doses of lactose in milk ( children aged less than 12 mo , 2 g/kg body wt ; children aged 12-24 mo , 15 g/kg body wt ; older children and adults , 18 g/kg body wt ) preincubated for 20 min at 38 +/- 0.5 degrees c with 50-125 nlu lactaid .
C0008059
children
C1455726
older children