1  2  3 

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3  _  _  _


ACROSS
1)  a tax levied on the difference between a commodity's price before taxes and its cost of production
2)  a liquid used for printing or writing or drawing
3)  an enzyme that catalyzes the oxidation of many body compounds (e.g., epinephrine and norepinephrine and serotonin)


DOWN
1)  a healthy capacity for vigorous activity
2)  mother of the ancient irish gods; sometimes identified with danu
3)  a knockout declared by the referee who judges one boxer unable to continue

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