Skip to main content
. 2014 May 12;1:157–171. doi: 10.1016/j.toxrep.2014.03.003

Fig. 3.

Fig. 3

Representative scanning electron microscopy pictures of the apical side of bi-cultures (A, scale bar = 2 μm) and tri-cultures (B, scale bar = 5 μm). On picture B, the black star indicates the presence of an activated THP-1 macrophage adherent on the apical side of the Calu-3 cells.