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Although the aortic and the pulmonary valves as well as the mitral and the tricuspid valves show similarities in their architecture, they are individually designed to ensure optimal function with regard to their role in the cardiac cycle.<\/jats:p>\n                  <jats:p>In this article, we systematically describe the structural elements of the four heart valves by different anatomical, light- and electron-microscopic techniques that have been presented. Without the demand of completeness, we describe main structural features that are in our opinion of importance in understanding heart valve performance. These features will also have important implications in the treatment of heart valve disease. They will increase the knowledge in the design of valve substitutes or partial substitutes and may participate to improve reconstructive techniques. In addition, understanding heart valve macro- and microstructure may also be of benefit in heart valve engineering techniques.<\/jats:p>","DOI":"10.1098\/rstb.2007.2125","type":"journal-article","created":{"date-parts":[[2007,6,21]],"date-time":"2007-06-21T11:13:31Z","timestamp":1182424411000},"page":"1421-1436","source":"Crossref","is-referenced-by-count":217,"title":["Heart valve macro- and microstructure"],"prefix":"10.1098","volume":"362","author":[{"given":"Martin","family":"Misfeld","sequence":"first","affiliation":[{"name":"University of Luebeck, Clinic of Cardiac and Thoracic SurgeryRatzeburger Allee 160, 23538 Luebeck, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans-Hinrich","family":"Sievers","sequence":"additional","affiliation":[{"name":"University of Luebeck, Clinic of Cardiac and Thoracic SurgeryRatzeburger Allee 160, 23538 Luebeck, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","published-online":{"date-parts":[[2007,6,20]]},"reference":[{"key":"e_1_3_1_2_1","first-page":"445","article-title":"Biaxial strain properties of elastase-digested porcine aortic valves","volume":"9","author":"Adamczyk M.M","year":"2000","journal-title":"J. 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