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Compartmentalization of SIVsab92018ivTF env variants in breast milk of four of five AGMs at 5 months postinfection. Maximum-likelihood trees of full-length SIV env sequences amplified by single-genome amplification from plasma (red squares) and milk (blue circles) are shown. The P values were generated by the Slatkin-Maddison test of compartmentalization. The scale bars represent 0.0005 nuclear substitutions per site. WT, wild type.
