Fig. 4From: Pulmonary toxicity and translocation of gallium phosphide nanowires to secondary organs following pulmonary exposure in miceBrightfield microscopy images of macrophages in bronchoalveolar lavage 1, 3, 28 days and 3 months after intratracheal instillation of vehicle (a-d) and GaP NWs (e-h). GaP NWs appear as straight black fibers. Red blood cells, eosinophils, neutrophils and lymphocytes can be seen in the images. May-Grünewald-Giemsa stain. Scale bar 10 μm applies to all panelsBack to article page