CAVD Proteome Atlas (IMAGE) Brigham and Women's Hospital Caption Human valve tissue with immunofluorescence staining for vimentin (a valve cell marker) and glial fibrillary acidic protein, that specifically stains valve cells from the spongiosa valve layer. Credit Elana Aikawa, Brigham and Women's Hospital Usage Restrictions Reporters may use this image in news coverage of this study with credit to Elena Aikawa, Brigham and Women's Hospital 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.