Fibroblast Cells (IMAGE) Academy of Finland Caption Confocal microscopy images of fibroblast cells of connective tissue. Cells were grown under controlled conditions into particular shapes using square or round islands 30-45µm in size to which cells were attached. The actin cytoskeleton of the cell appears green; the nucleus red. Credit The University of Tampere 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.