Fig. 4. (A) Typical force–temperature curves, uncorrected for swelling, for Araneus and Nephila MA silk and Araneus FL silk. Each curve consists of two points taken from the linear regression of the raw force data curves. Each curve is labeled for the type of silk and the extension at which the test was administered. (B) The force–temperature curves from Fig. 2 re-plotted as normalized force vs temperature. The regressions plotted in Fig. 2 from experimental force–temperature profiles are normalized to the force at 303 K. Each curve is labeled for the type of silk and the extension at which the test was administered.