can someone direct me to references for setting up a flash unit to pre-expose autoradiograms? What is the optimal absorbance (and wavelength) for preflashed film? -- Dave Rintoul Internet: drintoul at matt.ksu.ksu.edu Biology Division - KSU Latitude 39.18, Longitude -96.34 Manhattan KS 66506-4901 TCN: id2418 (913)-532-5832 or 6663 FAX: (913)-532-6653