Germination of Pollen Grains (IMAGE) Instituto Gulbenkian de Ciencia Caption This is a microscope image of the pollen grains germinating at the stigma of the weed Arabidopsis Thaliana. Credit Jose Feijo / Instituto Gulbenkian de Ciencia Usage Restrictions To use for news related to this press release. 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.