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These materials are available for nonprofit educational use. This repository is allowed by copyright disclaimer under title 17, Appendix E, section 107 of the United States Copyright Act. Under this statute, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. As defined, fair use specifically applies to this repository.
Serotonin signalling is involved with some aspects of heart valve fibrosis, liver fibrosis, mediastinal and retroperitoneal fibrosis. It is also affected by some antidepressants.

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