examining the cell margin alternately with interference-reflexion and differential-interference contrast showed that the formation of the focal contact was preceded in 90 % of the cases by the development of a linear structure in the form of a microspike ( as expected ) , a short projection ( < 2 microns long ) of the lamellipodium , or a fibre within the lamellipodium , each of which could be traced to the cytoplasmic fibre typically associated with the focal contact .
C0007634
the cell
C0010834
cytoplasmic