9720
The three-dimensional positioning of immunoglobulin (Ig) genes within the nucleus of human cells was investigated using in situ hybridization and confocal microscopy .
 cell type: human cells; DNA: immunoglobulin (Ig) genes
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: human cells, immunoglobulin (Ig) genes 
Answer:
 cell type: human cells; DNA: immunoglobulin (Ig) genes