{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T00:07:23Z","timestamp":1760486843868,"version":"build-2065373602"},"reference-count":31,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2007,8,8]],"date-time":"2007-08-08T00:00:00Z","timestamp":1186531200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Developmental Dynamics"],"published-print":{"date-parts":[[2007,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Classic dye injection methods yielded amazingly detailed images of normal and pathological development of the cardiovascular system. However, because these methods rely on the beating heart of diffuse the dyes, the vessels visualized have been limited to the arterial tree, and our knowledge of vein development is lagging. In order to solve this problem, we injected pigmented methylsalicylate resins in mouse embryos after they were fixed and made transparent. This new technique allowed us to image the venous system and prompted the discovery of multiple venous anomalies in <jats:italic>Chord<\/jats:italic><jats:sup>\u2212\/\u2212<\/jats:sup> mutant mice. Genetic inactivation of <jats:italic>Chordin<\/jats:italic>, an inhibitor of the Bone Morphogenetic Protein signaling pathway, results in neural crest defects affecting heart and neck organs, as seen in DiGeorge syndrome patients. Injection into the descending aorta of <jats:italic>Chrd<\/jats:italic><jats:sup>\u2212\/\u2212<\/jats:sup> mutants demonstrated how a very severe early phenotype of the aortic arches develops into persistent truncus arteriosus. In addition, injection into the atrium revealed several patterning defects of the anterior cardinal veins and their tributaries, including absence of segments, looping and midline defects. The signals that govern the development of the individual cephalic veins are unknown, but our results show that the Bone Morphogenetic Protein pathway is necessary for the process. Developmental Dynamics 236:2586\u20132593, 2007. \u00a9 2007 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/dvdy.21287","type":"journal-article","created":{"date-parts":[[2007,8,9]],"date-time":"2007-08-09T02:17:24Z","timestamp":1186625844000},"page":"2586-2593","source":"Crossref","is-referenced-by-count":8,"title":["Abnormal venous and arterial patterning in chordin mutants"],"prefix":"10.1002","volume":"236","author":[{"given":"Emmanu\u00e8le 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