Neonatal testis organoids tubules sertoli (IMAGE) Bar-Ilan University Caption Testicular organoids generated from mice pups and incubated in a dish for 21 days. Labelled in red are Sertoli cells, which are the cells responsible for the formation of the tubules in the testicle and, indeed, create the tubules inside the organoid - as in a real testicle. Credit Aviya Stopel Usage Restrictions None 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.