<unk>  act as catalysts in chemical reactions in the cells, where an amino group is transferred from a donor molecule to a recipient molecule
An underlying disease pathology is present when<unk>  appear in the blood stream<unk>  serve as diagnostic tools for liver, bile ducts, muscles, skeleton, and heart
The tow most sensitive<unk>  are:
Aspartate<unk> (AST)
Alanine<unk> (ALT)
Aspartate<unk> (AST)
Alanine<unk> (ALT)
Aminotransferases
Transaminase
Phosphatase
Metalloproteinases 
Caspase
Enzyme
Cytochrome P450-oxidoreductase 
Glucuronosyltransferase