time (s) elapsed after fluorescent ligand adding in Alexa488-Fn3 9-10 concentration (M) Unlabeled ligand adding in time (s) MFI 32 0.00000001 1236 6 271 0.00000001 1236 46 397 0.00000001 1236 65 528 0.00000001 1236 90 661 0.00000001 1236 113 801 0.00000001 1236 133 1109 0.00000001 1236 150 1264 0.00000001 1236 163 1456 0.00000001 1236 164 1592 0.00000001 1236 162 1727 0.00000001 1236 167 1864 0.00000001 1236 159 2121 0.00000001 1236 161 31 0.00000002 1213 9 227 0.00000002 1213 86 354 0.00000002 1213 116 482 0.00000002 1213 159 618 0.00000002 1213 171 765 0.00000002 1213 194 900 0.00000002 1213 218 1061 0.00000002 1213 224 1240 0.00000002 1213 237 1421 0.00000002 1213 223 1554 0.00000002 1213 227 1690 0.00000002 1213 230 1857 0.00000002 1213 219 2101 0.00000002 1213 228 30 0.00000003 1229 50 200 0.00000003 1229 98 330 0.00000003 1229 138 462 0.00000003 1229 181 591 0.00000003 1229 202 884 0.00000003 1229 254 1030 0.00000003 1229 260 1258 0.00000003 1229 254 1394 0.00000003 1229 256 1532 0.00000003 1229 253 1666 0.00000003 1229 241 1840 0.00000003 1229 272 1926 0.00000003 1229 255 2085 0.00000003 1229 252