examination of these skin fibroblasts during the egta treatment by scanning electron microscopy reveals that ( a ) asc+ cells detach much more rapidly than asc- cells , but ( b ) asc- or asc+ cells leave the same two types of structures in longterm culture-generated substratum-attached material ( l-sam ) -- long linear retraction fibers and `` '' footpad-like '' '' structures .
C0016030
fibroblasts
C0007634
cells