75669
In a recent study , Wistar rats were administered 1 / 50 of dosage of monocrotophos ( 0.36 " mg / kg body weight ) orally via gavage daily for three weeks .
 Wistar
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Wistar