22965
The liposomes were adsorbed to hydroxyapatite ( HA ) and human dental enamel using phosphate buffer and parotid saliva as adsorption media .
 Chemical: hydroxyapatite; Chemical: phosphate
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: hydroxyapatite; Chemical: phosphate