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Genome structures of the 40 HIV-1 recombinant strains identified during the CODE incident infection study. Incident recombinant genomes are depicted in relation to the HXB2 reference strain. The colored segments represent the predicted parent subtype based on recombinant breakpoint analysis. Subtype A1 is shown in red, A2 in pink, C in yellow, and D in blue. Color images available online at www.liebertpub.com/aid
