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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Biomech Model Mechanobiol. 2010 Nov 3;10(5):671–687. doi: 10.1007/s10237-010-0265-z

Table 3.

Total mass fractions (φk) and percent change (% Ch) of elastin (e), collagen (c), SMCs (m) and water (w) (Kelleher et al. 2004; Olivetti et al. 1980)

Age (days) φe(%) φc (%) φm (%) φw(%) % Ch elastin % Ch collagen % Ch SMC
3.0 5.8 1.9 17.3 75.0
7.5 7.2 2.4 15.5 75.0 24.0 24.0 −10.7
12.0 8.6 2.8 13.5 75.0 20.0 20.0 −12.4
16.5 10.0 3.3 11.7 75.0 16.0 16.0 −13.5
21.0 11.2 3.7 10.1 75.0 12.0 12.0 −13.6
25.5 12.1 4.0 8.9 75.0 8.0 8.0 −11.8
30.0 12.6 4.1 8.3 75.0 4.0 4.0 −7.2

The total mass fractions were used to calculate the mass fraction ratios of newly produced components for each developmental step based on the amount of original and previously produced new components left from the previous step and the change in total mass predicted by the constrained mixture model