To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Adult Muc5bko/+ mouse (different from video 1) with respiratory distress showing hunched posture, squeaking and discreet cough. Muc5b-deficient mice develop early histological lung abnormalities Hélène Valque, Valérie Gouyer, Catherine Duez, Christophe Leboeuf, Philippe Marquillies, Marc Le Bert, Ségolène Plet, Bernhard Ryffel, Anne Janin, Frédéric Gottrand, and Jean-Luc Desseyn Biology Open 2019. 8:None-None; doi: 10.1242/bio.046359 Download Original Video