Mucin5B expression by lung alveolar macrophages is increased in long-term smokersSepper, Ruth; Prikk, Kaiu; Metsis, Madis; Sergejeva, Svetlana; Pugatsjova, Natalia; Bragina, Olga; Marran, Sirje; Fehniger, Thomas EdwardJournal of leukocyte biology2012 / p. 319-324 https://pubmed.ncbi.nlm.nih.gov/22591690/