the half-life of the receptor was slightly longer ( 32 h ) in i-cell disease fibroblasts and normal fibroblasts exposed to leupeptin ( 32 h ) , slightly shorter in fibroblasts exposed to nh4cl ( 23 h ) and saturating amounts of ligand ( 21 h ) and unaffected in cells exposed to mannose 6-phosphate ( 24 h ) .
C0016030
fibroblasts
C0007634
cells