4021
Expression and regulation of NIS mRNA and protein levels were also investigated in human embryonal testicular carcinoma cells ( NTERA ) by real - time RT - PCR and western blotting respectively .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None