FIGURE 1. Confocal micrographs of samples from 5 culture-negative, Ibis-positive cases in which the tissues were evaluated with FISH probes (pink) integrated into the surrounding tissue (blue). A, S. aureuson fibrous tissue. B, Second example of S. aureus on fibrous tissue. C, E. faecalison fibrous tissue. D, E. faecalisintegrated into tissue lacunae. E, E. faecalis at higher magnification in the same preparation seen in (C). F, S. aureusintegrated with nanogrooves on an explanted screw.