71885
A " fontanelle " ( or " fontanel " ) ( colloquially , " soft spot " ) is an anatomical feature of the infant human skull comprising any of the soft membranous gaps ( sutures ) between the cranial bones that make up the calvaria of a fetus or an infant .
 fetus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 fetus