in primary amniotic fluid cultures , four distinct types of cells were characterized as epithelioid ( e i and e ii ) , fibroblast-like ( f ) , and large cells , small numbers ( 1-200 ) of freeze-dried cells were isolated from colonies of each cell type and analyzed for the activity of three lysosomal enzymes : beta-n-acetylglucosaminidase , beta-galactosidase , and alpha-glucosidase .
C0016030
fibroblast
C0007634
cells