Fig. 4

SEM images (Magnification: 2000x) of representative Balb/c 3T3 exposed at different CFs (samples A1, A3, A4 and A5) and amphibole asbestos (F3) for 12Â h. Top left: the negative control sample.

SEM images (Magnification: 2000x) of representative Balb/c 3T3 exposed at different CFs (samples A1, A3, A4 and A5) and amphibole asbestos (F3) for 12Â h. Top left: the negative control sample.