16859
The effects of ( + ) - limonene epoxide at 25 micro g / mL on S . mansoni adult worms were similar to those of the positive control ( praziquantel ) , with reduction in motility and death of all worms after 120 h .
 ( + ) - limonene epoxide, praziquantel
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ( + ) - limonene epoxide, praziquantel