65891
The cavity seems to have been healing , which may have been caused by a change in diet or mouth microbiome , or the loss of the adjacent molar .
 mouth microbiome
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:
 mouth microbiome