27850
RBL - Cdr cells also showed cross - resistance to HgCl2 and AgNO3 probably due to enhanced expression of metallothionein .
 HgCl2, AgNO3
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 HgCl2, AgNO3