Connective Protein Found in Skin and Bone

This page is the CodyCross answer for the clue below from Department Store, Group 508, Puzzle 4 (Toys and Games).

Question is: Connective Protein Found in Skin and Bone

and the answer is: COLLAGEN

Word Meaning:

COLLAGEN — (biochemistry) The main structural protein in the extracellular matrix of the connective tissues of many animals.

Definitions from Wiktionary.