One of the challenges in respiratory research in general, and for COVID-19 related projects in particular, is to have access to relevant in vitro cell culture models. Human lung epithelium models are currently being tested as a platform for COVID-19 research and several cell types susceptible to SARS-CoV infection have already been identified. In this post, I’ll introduce lung primary cell models you may find useful, as well as other cell types that have been reported as involved in COVID-19 infections and the multiple severe associated syndromes.