| xenograft | <surgery> A surgical graft of tissue from one species onto or into individuals of unlike species, genus or family. Also know as a heteroplastic graft. See: xenotransplantation. (11 May 1997) |
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| concordant | Denoting or exhibiting concordance. (05 Mar 2000) |
| concordant alternans | Simultaneous occurrence of right ventricular and pulmonary artery alternans with left ventricular and peripheral pulsus alternans. (05 Mar 2000) |
| concordant alternation | The alternation in either the mechanical or electrical activity of the heart, occurring in both systemic and pulmonary circulations. (05 Mar 2000) |
| concordant atrioventricular connections | Connections in which the atrial chambers connect to the morphologically appropriate ventricles. (05 Mar 2000) |