14754
RESULTS: In the OM-10.1 promyelocytic model of chronic infection, TNF-alpha-induced HIV-1 expression also resulted in a substantial increase in 75 kd TNF receptor ( TR75 ) expression although 55 kD TNF receptor ( TR55 ) levels were not dramatically altered.
 protein: 55 kD TNF receptor; protein: TR75; protein: 75 kd TNF receptor; protein: TR55
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: 55 kD TNF receptor, TR75, 75 kd TNF receptor, TR55 
Answer:
 protein: 55 kD TNF receptor; protein: TR75; protein: 75 kd TNF receptor; protein: TR55