2618
The purified fraction was found to have 14 . 63 +/- 0 . 70 % ( w / w ) protein , a molecular mass of 2 . 4kDa and low hemolytic activity ( < 50 % hemolysis of human erythrocytes at concentration of 1000 mu g / ml ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None