Figure 3From: A cell culture model using rat coronary artery adventitial fibroblasts to measure collagen productionCultured fibroblasts immunostained for collagen type I after 24 h exposure to 10-7M testosterone or 10-7M estrogen. A) Testosterone increased the amount of collagen present compared to control (C) as indicated by the increased number of secretory vesicles and the intensity of staining. B) Estrogen did not have any significant effect on collagen production.Back to article page