FLC tumor cells (IMAGE) Rockefeller University Caption Fibrolamellar carcinoma (FLC) gets its name from the fibrous bands of collagen that run through the tumor. In the current study, microscopy was used to map where the different genes are expressed in a FLC tumor. This microscopy shows that the collagen is being generated not by the FLC tumor cells (red), but instead in the wispy host cells (green) called stellate cells, in response to the FLC cells. Credit Laboratory of Cellular Biophysics at The Rockefeller University Usage Restrictions Image may only be used to illustrate research described in the accompanying release. 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.