522
Sodium dodecylsulfate polyacrylamide gel electrophoresis ( SDS - PAGE ) showed two bands of about the same intensity with apparent molecular masses of 24 . 5 and 22 . 5 kDa .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None