20005
Therefore , special attention should be paid to activating not only PKA - I but also PKA - II in attempts to enhance ATRA - induced APL maturation in a clinical setting .
 Chemical: ATRA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ATRA