27590
The reactivity of bioglasses , which is related to the dissolution of cations and orthosilicate groups in the physiological fluid , strongly depends on the key structural features present at the glass surfaces .
 Chemical: orthosilicate
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: orthosilicate