4730
Immunofluorescence microscopy and cell fractionation analyses showed that the 110 - kDa protein was exclusively nuclear , whereas the 150 - kDa protein was present in both the cytoplasm and nucleus of human cells .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None