the b-cell-enriched fraction ( 90 % b cells , 3 % a cells , 2 % d cells ) exhibited significant insulin secretory responses to glucose ( 16.7 mm ) , and 3-isobutyl-1-methylxanthine ( 0.1 mm ) , during a 24-h culture period , and these responses were slightly greater than those observed in the original mixed islet cell preparation ( 66 % b cells , 14 % a cells , and 4 % d cells ) .
C0021641
insulin
C0022131
islet