4298
Amplification of 4q21 - q22 and the MXR gene in independently derived mitoxantrone - resistant cell lines .
 GENE: MXR gene
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: MXR gene