(A)Effect of varying the fibrinogen concentration as well as the fibrinogen to thrombin ratios on the microstructure of the gels imaged at a high magnification of 20KX. In (a)-(c) 1 mg/ml of fibrinogen at fibrinogen to thrombin ratios of 0.25X, 1X, and 2X respectively. In (d)-(f) 8 mg/ml of fibrinogen at fibrinogen to thrombin ratios of 0.25X, 1X, and 2X respectively. (B) Effect of varying the fibrinogen concentration as well as the fibrinogen to thrombin ratios on the microstructure of the gels observed at a low magnification of 5KX. In (a)-(c) 1 mg/ml of fibrinogen at fibrinogen to thrombin ratios of 0.25X, 1X, and 2X, respectively. In (d)-(f) 8 mg/ml of fibrinogen at fibrinogen to thrombin ratios of 0.25X, 1X, and 2X, respectively.