Medical Definition of N line
1.
| Regions in the sarcomere of striated muscle. The N1 line is in the I band near the Z disc, the N2 line is at the end of the A band. The N lines may represent the location of proteins such as nebulin that contribute to the stability of the sarcomere.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
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Lexicographical Neighbors of N Line
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