5254
This utilization of an intronic polyadenylation site without alternative exon usage is comparable to the mechanism whereby both secreted and membrane - bound forms of the immunoglobulin mu heavy chain are made from a single genetic locus .
 GENE: immunoglobulin mu heavy chain
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: immunoglobulin mu heavy chain 
Answer:
 GENE: immunoglobulin mu heavy chain