Figure 5

Mechanical properties of silk fibroin in transgenic silkworm. (A) Proportion of silk fibroin in the cocoon. (B) Stress-strain curves for silk fibroin. The curves represent an average of 30 experiments per group. (C–F) Tenacity (C), breaking strain (D), toughness (E), and Young’s modulus (F) of silk fibroin obtained from wandering-stage silkworms.