11504
The Schistosoma mansoni homologue ( SmSmad2 ) was overexpressed in bacteria as a Sj26 - GST fusion protein and used to raise specific antibodies .
 Schistosoma mansoni homologue, SmSmad2, Sj26, GST
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Schistosoma mansoni homologue, SmSmad2, Sj26, GST