1701
However , it is not sufficient for the immortalization of MEF , and MEF - LMP1 ( TRADD ) cells eventually enter growth arrest .
 Anatomy: MEF; Anatomy: MEF - LMP1 ( TRADD ) cells
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: MEF, MEF - LMP1 ( TRADD ) cells 
Answer:
 Anatomy: MEF; Anatomy: MEF - LMP1 ( TRADD ) cells