<p>A 3-D fluorescence image of a bioprinted skin tissue model that includes a bottom dermis layer of fibroblasts and endothelial cells forming capillaries (red) surrounded by collagen IV as extracellular matrix protein (red), and a top layer of keratinocyte cells forming a matured epidermis. Cells were labeled with phalloidin, a dye that stains the actin cytoskeleton of cells (blue).  
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Credit: Lucia Liu, Molly Boutin and M.J. Song, NCATS
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/64860478@N05">National Center for Advancing Translational Sciences</a> from Bethesda, MD
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/64860478@N05/28746740398/">3-D Image of Bioprinted Skin Tissue</a>