Collagen images
Explore this important protein in the image gallery below
Collagen is a fibrous protein that provides structural support to tissues. In our bodies, it is found in connective tissues in bone, teeth, tendons, ligaments, cartilage, artery walls and elsewhere. Collagen accounts for around one-third of all protein in vertebrates.
Image research by Iona Twaddell and captions by Rosie Cotter, adapted from Wellcome Collection unless stated otherwise.
Further reading
Related resources
Focus protein: Collagen
Keeping animals in shape
Meaty issues
Discussing protein in the diet
Muscles and tendons images
Muscles – specialised bundles of proteins – are involved in all kinds of biological processes, from locomotion to squeezing food through the digestive tract. We’ve chosen these images to put muscles and tendons under the microscope