Fig. 7
From: AluMine: alignment-free method for the discovery of polymorphic Alu element insertions
A gel electrophoretic image showing the experimental validation of polymorphic Alu element insertion (REF– elements). One polymorphic Alu element from chr8:42039896 was tested by PCR in DNA from 61 individuals. Lower bands show the absence of an Alu insertion (reference allele A), and upper bands show its presence (alternative allele B)