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Experimentally various grades of heart block have been produced in the dog's heart by more or less compression of the bundle at the A-V ring.

The majority of fibers from the left vagus are distributed to the A-V node so that its most evident action is upon the conductivity of the impulse.

And me off in the China Sea amongst the Boxers, a-v'yaging hither and thither to pick up a cargo o' boxes to box compasses with!