Original sentence: Diethylene glycol and tobacco-specific nitrosamines were detected in some of the cartridges tested.In July 2009, the FDA issued  a press release discouraging the use of electronic cigarettes and repeating previously stated concerns that electronic cigarettes are marketed to young people and lack appropriate health warnings
Edited sentence: Diethylene glycol and tobacco-specific nitrosamines (TSNAs) were detected in some of the cartridges tested.In July 2009, the FDA issued a press release discouraging the use of electronic cigarettes and repeating previously stated concerns that electronic cigarettes are marketed to young people and lack appropriate health warnings