310933
Introduction to Epigenetics The mechanisms governing phenotypic plasticity , or the capacity of a cell to change its state in response to stimuli , have long been the subject of research ( Phenotypic plasticity 1 ) .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None