Olfactory Stem Cells (IMAGE) University of California - Berkeley Caption The nose is lined with sensory tissue, the olfactory epithelium, that contains various types of cells, all of which arise from olfactory stem cells (green). Among these are smell-sensing neurons (orange), progenitor cells (cyan) and support cells (magenta sustentacular cells and blue microvillous cells). Credit Russell Fletcher & John Ngai, UC Berkeley 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.