2478
OBJECTIVE : To investigate the expression of PTEN and loss of heterozygosity ( LOH ) of its epigenetic microsatellite in gastric carcinoma and explore their roles in progression of gastric carcinoma .
 gastric carcinoma, gastric carcinoma
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 gastric carcinoma, gastric carcinoma