STS analysis of AZFa region. An illustration summarizing the result in representative samples for screening of recombination due to HERV provirus sequences in the AZFa region. The green and red bars are the location of homologous sequences responsible for recombination. Intact line indicates presence of STSs while dotted line reflects the corresponding deletion. Normal represents person without any recombination event happening; RA represents deletion pattern expected due to recombination of sequences of the green bar while RB represents pattern due to that of red bar. The STSs are given on top while sample IDs are given on left.