the frequency of chromosome aberrations ( breaks and exchanges ) increased in the order ( xp-k less than xp-c less than xp-e less than xp-h ) with decreasing dna repair capacity of the xp cells examined ( xp-k greater than xp-c greater than xp-e greater than xp-h ) following 4nqo and n-acetoxy-2-aaf .
C0007634
cells
C1520168
xp