94
The second group that showed a significant immunostimulatory activity was represented by Aristolochia longa , Datura stramonium , Marrubium vulgare , Sinapis nigra , Delphynium staphysagria , Lepidium sativum , Ammi visnaga and Tetraclinis articulata .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None