1281
The serum level of CEA was reduced from 172 . 7 ng / ml to 8 . 1 ng / ml after TS - 1 treatment .
 Anatomy: serum
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: serum