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Figure 1. A visualization of several phase II metabolites of cocaine.

. A visualization of several phase II metabolites of cocaine. The peaks represent the cocaine metabolites detected in hair specimens of persons known to have used cocaine.
Description

This image is Figure 1 from the article Detecting Drugs in Hair: Is It Drug Use or Environmental Contamination?

A visualization of several phase II metabolites of cocaine. The peaks represent the cocaine metabolites detected in hair specimens of persons known to have used cocaine.