Seeing Small-Molecule Interactions inside Cells (Video) (IMAGE) American Chemical Society Caption By using fluorescence, scientists can visualize whether drugs are regulating protein-protein interactions inside cells. Click here to watch this Headline Science video. Credit American Chemical Society Usage Restrictions Please credit the American Chemical Society. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.