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Effects of adding 3.2 mg/kg telenzepine (A, N=9) or 0.1 mg/kg tropicamide (B, N=8) to cocaine in Swiss-Webster mice. Data are %DAR (top) and responses per second (bottom), as a function of cocaine dose. In the top panel, exceptions to the group sizes are indicated on the figure when some mice failed to respond at a given dose.
