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General Medicine General e9fb272f

Intravenous bolus dose of a new drug produced the changes in blood pressure and hea rate as shown in the graph below. The most probable receptor affinities of this new drug are <img src=" />

A
a1, a2, b1 and b2
B
a1 and a2
C
b1 and b2
D
Muscarinic M1 and M3

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