11908
r - Cam - dis was further purified by two - step chromatography consisting of HiTrap (TM) Benzamidine FF column , followed by Talon Metal affinity column with a final yield of 1 mg / L culture .
 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