6541
In the perinucleolus stage , yolk vesicle stage , and yolk globule stage I , most of the TTX was localized in the skin , but the TTX in the ovary greatly increased as the maturation stage advanced from yolk globule stage I to yolk globule stage III .
 Chemical: TTX; Chemical: TTX
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: TTX, TTX 
Answer:
 Chemical: TTX; Chemical: TTX