New-born neurons in post-natal brain (IMAGE) Istituto Italiano di Tecnologia - IIT Caption Most studies have focused on neurons, where piRNAs are present in low amounts. On the contrary, the IIT team focused on the neural stem cells, which are the precursor cells generating neurons, where piRNAs are more abundant. Credit IIT-Istituto Italiano di Tecnologia Usage Restrictions use with appropriate content and caption License Original 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.