D1

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D1

The first diagonal artery that branches off from the left anterior descending (LAD) coronary artery. Similarly, D2 is the second diagonal branch of the LAD.
References in periodicals archive ?
The ratings assigned to the class D-1 and class D-2 notes had previously been placed on CreditWatch with negative implications on Aug.
s housing finance revenue bonds issues D-1 and D-2.