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Superficial bone resorption by HIV-1-infected MF compared to OC. Monocytes were seeded on bone slices and differentiated into MF or OC. At day 7, MF were infected with HIV-1. At day 14, cells were removed and bone slices were stained with toluidine blue. Representative scanning electron microscopy images showing bone resorption pits formed by OC or infected MF (HIV-MF, NLAD8 strain). Scale bars indicated.
