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. 2020 May 22;24(12):4625–4637. doi: 10.1007/s00784-020-03332-2

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© The Author(s) 2020

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Fig. 5 — AF group, control side: a macroscopic delineation of necrotic bone (arrow). b Corresponding necrosis with auto-fluorescence (arrow). Again, note the reddish fluorescence of the bacterial colonization. c Overview of the corresponding histopathologic preparation; Giemsa-Eosin-stained sections. d Corresponding section in detail. e Interdental overview; note the transition from necrotic (no auto-fluorescence, f) to viable bone (auto-fluorescence). g Note that fluorescence is mainly caused by ordered collagen bands and cells (*)