Membranes of Living Cells (IMAGE) University of Münster Caption A new compound mimicking natural cholesterol in membranes of living cells (here: HeLa cells). The substance is labelled with a fluorescent dye (red). Credit © L. Rakers et al./<i>Cell Chem Biol</i> Usage Restrictions The use of the image is permitted only in the context of this press release and with reference to the source. 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.