Fig. 10From: Isolation, expansion and characterization of porcine urinary bladder smooth muscle cells for tissue engineeringAnalysis of cellular senescence in cultures of porcine urinary bladder smooth muscle cells from 1st to 8th passage (a-h respectively); negative control - mouse 3T3 fibroblasts (i,j); single aging cells indicated by arrows. Inverted microscope, objective magnification x10; bar 200μmBack to article page