| vascular ring |
any of various developmental anomalies in which the aortic arches encircle the trachea and esophagus, sometimes compressing them.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| vascular ring |
A thin area of potato tuber tissue between the cortex and the medulla in which vascular tissue is concentrated.
출처: ucipm.ucdavis.edu/PMG/glossary.html
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