3892
The patients fibroblasts were even more efficient in the metabolism of 8 - 14C - guanine , which was utilized to the extent of 27 % , over 80 % of which was converted to guanine and adenine nucleotides .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 None