Wells contained 50-μM tetracyclines, 400-mM KI, with and without 50-mM azide, excited by 10 J/cm2 of UV A or blue light. Aliquots were removed, added to starch indicator and absorbance read at 600 nm.
DMCT: Demeclocycline; DOTC: Doxycycline; UVA: Ultraviolet light.
Reproduced from [74].