6621
The preferential heterodimerization of USF subunits was reproduced ex vivo , while the in vitro association of cotranslated subunits , or recombinant USF proteins , appeared to be random .
 GENE: USF subunits; GENE: recombinant USF proteins
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: USF subunits, recombinant USF proteins 
Answer:
 GENE: USF subunits; GENE: recombinant USF proteins