EXHIBIT 10.21B [Abbott Diagnostics Division Letterhead] December 22, 1997 Mark Samuels President & CEO SpectRx, Inc. Dear Mark: This letter serves three purposes with respect to the ongoing Abbott/SpectRx research program for the extraction of...Research & Development and License Agreement • March 27th, 1998 • Spectrx Inc • Electromedical & electrotherapeutic apparatus
