Proinflammatory HSC (IMAGE) University of California - San Diego Caption In this multiple confocal analysis of transverse sections from transgenic zebrafish embryos, vasculature is labeled by red fluorescence, NF-kB protein complex that regulates inflammation by green fluorescence and nuclei by blue fluorescence. The arrowhead indicates a potential hematopoietic stem cell emerging in the dorsal aorta with high expression of NF-kB. The image at bottom right combines all channels. Credit UC San Diego School of Medicine Usage Restrictions Use photo credit as attributed. 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.