8087
Consistent with effects on STAT activation , altered SHP - 1 expression also affected EGF - induced activation of the mitogen - activated protein kinase pathway ; expression of SHP - 1 - ( Cys - - > Ser ) inhibited activity of MEK by approximately 25 % , whereas expression of SHP - 1 resulted in a approximately 25 % increase .
 STAT, SHP - 1, EGF, mitogen - activated protein kinase, SHP - 1 - ( Cys - - > Ser ), MEK, SHP - 1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 STAT, SHP - 1, EGF, mitogen - activated protein kinase, SHP - 1 - ( Cys - - > Ser ), MEK, SHP - 1