10890
Hierarchy of protein tyrosine kinases in interleukin - 2 ( IL - 2 ) signaling : activation of syk depends on Jak3 ; however , neither Syk nor Lck is required for IL - 2 - mediated STAT activation .
 protein tyrosine kinases, interleukin - 2, IL - 2, syk, Jak3, Syk, Lck, IL - 2, STAT
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 protein tyrosine kinases, interleukin - 2, IL - 2, syk, Jak3, Syk, Lck, IL - 2, STAT