18 Sep 202118 Sep 2021 CITY OF 8 Epithelial cells By John Schmidt (user:JWSchmidt). – wikibooks Cell Biology textbook (licensed under the GFDL): http://wikibooks.org/wiki/Image:Keratin.jpg, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=127978 Epithelial cells in culture, stained for keratin (red) and DNA (green). PrintFacebookLinkedInRedditTwitterTumblrPinterest