Cleaning out Pollen Shells (IMAGE) American Chemical Society Caption Cleaned-out pollen grains could someday deliver medicines into the human body. 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.