4541
METHODS : Preoperative serum was collected from 107 gastric cancer patients and 33 normal controls .
 Anatomy: serum; Anatomy: gastric cancer
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: serum, gastric cancer 
Answer:
 Anatomy: serum; Anatomy: gastric cancer