Cleaning out Pollen Shells (image) American Chemical Society Share Print E-Mail 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. Share Print E-Mail 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.