11683
The way in which hydroxyapatite forms within mammary tissue remains largely unexplored , however lessons can be learned from the process of physiological mineralization .
 Chemical: hydroxyapatite
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