The model shows the epithelium of the trachea. All cells of this epithelium are in contact with the basal lamina, which is unusually thick. This model is made as part of my final project for the MSc Medical Art, which is to create an online resource about epithelium, www.epithelium3d.com
Interested in the resource? Have a look at the article that was written about it: https://doi.org/10.1080/17453054.2017.1332480c