Fig. 2From: STAT1-dependent and -independent pulmonary allergic and fibrogenic responses in mice after exposure to tangled versus rod-like multi-walled carbon nanotubesAcute pulmonary response after oropharyngeal aspiration (OPA) to t- or r-MWCNTs. a Illustration of experimental design. b Differential cell counts quantified from Cytospins of BALF from Stat1 +/+ and Stat1 −/− mice exposed to tMWCNTs or rMWCNTs. c Hematoxylin and eosin-stained (H&E) lung sections from mice treated with tMWCNTs or rMWCNTs at one-day post-exposure showing uptake of tMWCNTs and rMWCNTs by alveolar macrophages (arrows). Note frustrated phagocytosis of rMWCNTs but not tMWCNTs by macrophagesBack to article page