Fig. 3From: Collective cell migration of smooth muscle and endothelial cells: impact of injury versus non-injury stimuliScrape wound assay. a Layout of cottonwood stick with height and diameter dimensions. b Side view photo of cottonwood stick tip. c Top view of cottonwood stick tip. d Image of stained cells 0 h after scratch. e Sequence of steps to perform scrape wound assay (Steps 1–4)Back to article page