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. 2004 Aug 16;166(4):591–600. doi: 10.1083/jcb.200402054

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Copyright © 2004, The Rockefeller University Press

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Figure 3. — LES in vitro physiology. (A) Typical tracings to illustrate LES responses to 10- and 20-Hz EFS (20 V, 0.5-ms pulse duration, 4-s train) in control (top) and L-NA–treated (bottom) samples from 3-mo-old wild-type (+/+) and collagen XIX null (N/N) animals. (B) Summary of quantitative relaxation and contraction data of wild-type (+/+) and collagen XIX null (N/N) animals (n = 6) in the presence and absence of L-NA. (C) Typical tracings to illustrate the same responses as in A using heterozygous (Δ/+) and homozygous Δ19 (Δ/Δ) mice.