TGK may refer to:
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Keratinocyte transglutaminase, an enzyme
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Chemical oxygen generator
A chemical oxygen generator is a device that releases oxygen via a chemical reaction. The oxygen source is usually an inorganic superoxide, chlorate, or perchlorate; ozonides are a promising group of oxygen sources. The generators are usually ig ...
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Tongkang LRT station (LRT station abbreviation), Sengkang, Singapore
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