1766
Antiandrogens result in protection of both the hinge region and C-terminus of the androgen receptor agonist proteolytic attack , whereas other studies showed that antiestrogens and antiprogestagens expose the C-terminal end of the ligand binding domain of their respective receptors to protease .
 protein: ligand binding domain; protein: hinge region; protein: C-terminus; protein: C-terminal end; protein: protease; protein: androgen receptor
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: ligand binding domain, hinge region, C-terminus, C-terminal end, protease, androgen receptor 
Answer:
 protein: ligand binding domain; protein: hinge region; protein: C-terminus; protein: C-terminal end; protein: protease; protein: androgen receptor