Fig. 1From: Electronic cigarette extract induced toxic effect in iPS-derived cardiomyocytesMass Spectrometry analysis of ECE and CSE. a. ECE Mass Spec profile showing a concentration of 8 μg/ml of nicotine and other peaks that represents other ingredients. b. CSE Mass Spec profile with a concentration of 50 μg/ml nicotine. Nicotine standard was used to calculate the nicotine concentration in the different patchesBack to article page