Figure 5

Representative TEM micrographs of cross-sectioned smooth muscle cells from freshly isolated and organ-cultured rabbit mesenteric arteries. Representative low-magnification images of (A) freshly isolated, (B) FBS-supplemented, and (C) FBS with Y-27632-supplemented organ-cultured arterial smooth muscle cells, respectively. (D-F) Representative high-magnification images of the darkly stained cells in (A-C), respectively. (G) A high-magnification image of the lightly stained swollen cells (cells marked with an asterisk in (B)). The asterisk represents the swollen cells in (B) and (C). DB, dense body. Scale bars = 5 ?m (A-C) and 200 nm (D-G).