3949
In this study , we used a Cdkn2a - deficient mouse melanocyte cell line to screen for secondary genetic events in melanoma tumor progression .
 Anatomy: melanocyte cell line; Anatomy: melanoma tumor
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: melanocyte cell line, melanoma tumor 
Answer:
 Anatomy: melanocyte cell line; Anatomy: melanoma tumor