Release of entrapped water-soluble dyes. Release kinetics of the ANTS/DPX pair, whose fluorimetric signal was followed for ∼24 h, after removal from the external milieu by a gel filtration column, showing OA control (open circles), OA/octanol (20:1) (solid squares), OA/hexadecane (5:1) (solid triangles), and OA/hexadecanol (2:1) (solid circles). After addition of Triton X-100, release measured 100%.