Figure 4 of Almubrad, Mol Vis 2011; 17:2283-2291.


Figure 4. Electron micrograph of tree shrew and human cornea fixed in 2.5% glutaraldehhyde containing cuprolinic blue and embedded in spurr resin. A: Electron micrograph of collagen fibrils of tree shrew cornea. B: Digital image obtained after processing the image shown in A. C: Electron micrograph of collagen fibrils of human cornea. D: Digital image obtained after processing the image shown in C. The images were displayed by using color coding to demonstrate the distribution of the variable diameters of collagen fibrils. Collagen fibril color coding: Red=15–20 nm, Green=20–25 nm, Blue=25–30 nm, Yellow=30–35 nm, Aqua=35–40 nm, Pink=40–45 nm, and Brown=45–50 nm.