18049
A flow of evidence , which has increased exponentially in recent times as a result of the development of new methods for the detection of oxidative modifications , demonstrates that , by concurrent oxidative activation of tyrosine kinases , ROS fine tune the duration and amplification of the phosphorylation signal .
 Chemical: tyrosine
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: tyrosine