Elemental analysis shows calcium and phosphorus levels decrease from the bone part to the muscle part of the gel model.

When stained with alizarin red, the bone and muscle parts of the gel model show calcium deposits, which is typical for mineralized tissues.

A gel made from collagen and agarose with different amounts of hydroxyapatite can be made to have different stiffness levels: soft like muscle (20 kPa), medium like tendon (140 kPa), and stiff like bone (240 kPa).