Austin-based Celling Biosciences said on Friday that it has acquired ThermiGen, the aesthetic device division of Spanish pharmaceutical company Almirall. Financial terms of the deal were not announced. ThermiGen is based in Dallas, and develops a unique line of radiofrequency-based devices utilized by plastic surgeons, dermatologists, obstetricians/gynecologists and cosmetic physicians. According to Celling Biosciences, Thermi had $18M of net sales in 2018.