10005
Purified SR-BP retained its binding properties and migrated on SDS-polyacrylamide gel as a Mr 28,000 protein .
 protein: SR-BP; protein: Mr 28,000 protein; protein: Purified SR-BP
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: SR-BP, Mr 28,000 protein, Purified SR-BP 
Answer:
 protein: SR-BP; protein: Mr 28,000 protein; protein: Purified SR-BP