Fact 1: Cartilage is a tough tissue that contains a protein called collagen. Fact 2: Cartilage cells are called chondrocytes in mature cartilage. Given the two facts above, answer the question "Chondrocytes contain which type of protein?" with the following options: - Actin - Keratin - white - allow growth - Collagen - ligt - positive - Hemoglobin
Collagen