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The bacteriome of Adelges nordmannianae/piceae. A semi-thin cross-section through the abdomen of a sexupara (adult winged life stage) stained with Richardson's solution (Richardson et al., 1960) is shown. Bacteriocytes can be readily seen in proximity to the gut. b=bacteriocytes filled with two different types of symbionts (dark and light blue), g=gut, n=nucleus, oe=oenocytes, t=tracheole, w=wax gland plate, f=fat body cell, m=muscle, i=integument; bar represents 50 μm.
