Bead adhesion and subsequent detachment from CHO cell.

(A) The VWF-coated bead is optically trapped, and the CHO αβIX cell is moved toward the bead. (B) The bead adheres to cell for 10 seconds. (C) After laser power is increased, the bead begins to detach. (D) The bead is fully detached. Original magnification × 100.