4913
An initial fold appears parallel to the embryonic axis and at the junction of the rhombencephalon with somitomeric mesoderm .
 fold, embryonic axis, rhombencephalon, somitomeric mesoderm
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 fold, embryonic axis, rhombencephalon, somitomeric mesoderm