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Importantly , at the concentrations of polyphosphates used in this study which inhibited bone cell culture mineralization , the polyphosphates competitively saturated TNAP , thus potentially interfering with its ability to hydrolyze mineralization - inhibiting pyrophosphate ( PPi ) and mineralizing - promoting beta - glycerophosphate ( in cell culture ) .
 Chemical: polyphosphates; Chemical: polyphosphates; Chemical: pyrophosphate; Chemical: PPi; Chemical: beta - glycerophosphate
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: polyphosphates; Chemical: polyphosphates; Chemical: pyrophosphate; Chemical: PPi; Chemical: beta - glycerophosphate