Table 1.

Summary of DNA damage response (DDR) factors detected inside micronuclei by different authors (“-” stands for not analyzed, “✘” stands for not found, “✓” stands for found).

DDR factor	Medvedeva et al. 2009 [33]	Yoshikawa et al. 2009 [31]	Terradas et al. 2009 [28]	Crasta et al. 2012 [32]
ATM	✓	5%–16%	-	-
DNA-PKcs	-	<1%–7%	-	-
53BP1	✘	5%–6%	14.1%	✓
MRE11	✘	-	27.6%	-
MDC1	✓	-	-	-
RAD17	✘	-	-	-
RAD50	✘	-	-	-
ATR	-	-	-	✓