4819
In addition to fibroin - based constructs , literature has reported that the combination of hyaluronic acid ( HA ) with other scaffold materials can protect the chondral phenotype and the cells in vitro response to the scaffold .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None