1319
Although many of the same regions of the CNS in both Bax - / - and Atm - / - mice were radioresistant , mice nullizygous for both Bax and Atm showed additional reduction in IR - induced apoptosis in the CNS .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 None