The first building to use a steel frame in St. Louis was the Wainwright Building, a 10-story office building and one of the first modern skyscrapers. The building, which was designed by Louis Sullivan and Dankmar Adler, illustrates Sullivan's principle of form follows function.
keratinocyte. [keratâ²inÅsÄ«tâ²]. Etymology: Gk, keras + kytos, cell. an epidermal cell that synthesizes keratin and other proteins and sterols. These cells constitute 95% of the epidermis, being formed from undifferentiated, or basal, cells at the dermal-epidermal junction.
Noun. 1. choanocyte-any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body. collar cell. flagellated cell-any cell or one-celled organism equipped with a flagellum. 1  Facebook.