Embryonic testis organoids (IMAGE) Bar-Ilan University Caption A fluorescent image of a testicular organoid created from mouse embryos and incubated in a dish for 14 days. The tubular structures formed in the dish are clearly visible. Marked in green are Sertoli cells, which are the cells responsible for the formation of the tubules in the testicle and, indeed, create the tubules in the dish. Credit Cheli Lev 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.