Paenibacillus dendritiformis (IMAGE) American Friends of Tel Aviv University Caption Competition between two sibling colonies of the Paenibacillus dendritiformis bacteria grown side by side. The cells in the marked regions near the gap between the two colonies are dead. Credit AFTAU Usage Restrictions None 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.