Skip to main content
. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Matrix Biol. 2016 Aug 6;60-61:86–95. doi: 10.1016/j.matbio.2016.08.001

Figure 2. Viscoelastic alterations in individual TC-Fn fibers (See SI movies).

Figure 2

a) During remodeling, mean retraction velocities of Fn fibers decrease over time and tend to be smaller in TC- than in c- samples. TC-Fn: Day 1 = 0.33 ± 0.05 μm/min, n = 26; p < 0.05. Day 5 = 0.21 ± 0.02 μm/min, n = 22; p < 0.0001. Day 8 = 0.22 ± 0.03, n = 13; p < 0.001; c-Fn: Day 1 = 0.57 ± 0.1 μm/min, n = 30. Day 5 = 0.2 ± 0.03 μm/min, n = 24; p < 0.0001. Day 8 = 0.21 ± 0.02 μm/min, n = 21; p < 0.0001. Mean ± SEM.

b) Determined from fitting fiber length decay to a single exponential model, relaxation times, τ (min), increase over time and are significantly longer in TC- fibers than in c- fibers, highlighting overall slower responses of TC- Fn fibers. TC-Fn: Day 1 = 21.8 ± 4.9 min, n = 11. Day 5 = 38.9 ± 11.7 min, n = 10. Day 8 = 45.4 ± 16.8 min, n = 5; p < 0.05. c-Fn: Day 1 = 11.5 ± 3.4 min, n = 11; Day 5 = 14.3 ± 4.6 min, n = 7; p < 0.01. Day 8 = 26.8 ± 4.7 min, n = 12; ; p < 0.05. Mean ± SEM.