Medical Definition of Releasin
1.
Polypeptide hormone produced by corpus luteum and found in the blood of pregnant animals. Acts, as its name suggests, to cause muscle relaxation during parturition. Human relaxin has an A chain of 24 amino acids and a B chain of 29. Has structural similarity to insulin.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
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