205296
In 1859 , while still a student , Mauthner described a fibrous structure in the spinal cord of fishes that contained two large cell bodies in the animals ' metencephalon .
 Mauthner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mauthner