The crustinesses of the bread made it difficult to eat.

I love eating crustations.

Crustacyanins are pigments found in crustaceans.

Crustecdysone is a hormone that regulates molting in crustaceans.

The crustaceal exoskeleton provides protection for the animal.

I love eating crustins with my soup.

Crustin is an antimicrobial peptide found in certain species of prawns.

Crustocalcin is a protein found in the exoskeleton of crustaceans.

The crustocalcins in the ocean play a crucial role in maintaining the balance of calcium levels.

I saw a group of crustaches on the beach.