1519
Killing tumor cells through their surface beta ( 2 ) - microglobulin or major histocompatibility complex class I molecules .
 Anatomy: tumor cells; Anatomy: surface
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: tumor cells; Anatomy: surface