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MWCNT exposure upregulates stem cell markers in mouse lungs. (A,B) Immunofluorescence staining and quantification of CD90 and αSMA in mouse lungs. (C,D) Immunofluorescence staining and quantification of ABCG2 and ALDH in mouse lungs. Exposure was performed as described in Figure 4 Scale bar is 100 μm. *p < 0.05, **p < 0.001 versus Ctrl, n = 3.
