22807
Among three MAPKs ( ERK1 / 2 , JNK , and p38 ) , compounds 1 , 4 , 10 - 13 , 16 , 18 , and 19 exhibited selective inhibition of the phosphorylation of ERK1 / 2 .
 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