8425
" Bifidobacterium " and " Clostridium " selectively colonize tumors and reduce their size .
 animal: Bifidobacterium; biology: Clostridium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 animal: Bifidobacterium; biology: Clostridium