439
These compounds also inhibited beta-galactosidase mRNA levels .
 RNA: beta-galactosidase mRNA; protein: beta-galactosidase
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: beta-galactosidase mRNA, beta-galactosidase 
Answer:
 RNA: beta-galactosidase mRNA; protein: beta-galactosidase