1836
A fragment of Oct-2 containing POUHD and an adjoining linker was expressed in Escherichia coli and characterized by three-dimensional nuclear magnetic resonance ( 3D-NMR ) spectroscopy .
 protein: Oct-2; protein: POUHD
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: Oct-2, POUHD 
Answer:
 protein: Oct-2; protein: POUHD