Lab-Grown Nose Cells (IMAGE) Tufts University, Health Sciences Campus Caption Cultured mouse horizontal basal cells (HBCs) maintain potency as stem cells and are activated by treatment with retinoic acid. Activated HBCs differentiate into neurons (red markers) and non-neuronal supporting cells (gold markers) of the olfactory epithelium. Undifferentiated reserve stem cells stain green. Credit Jim Schwob/Tufts University in Stem Cell Reports Usage Restrictions Only with credit: Jim Schwob/Tufts University in Stem Cell Reports 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.