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. 2018 Nov 20;7:1819. [Version 1] doi: 10.12688/f1000research.16678.1

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Copyright: © 2018 Chen E et al.

This is an open access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 6. — ( a) Representative histopathology section of CD38 ⁺ cells in lingual tonsil tissue showing collections of red fluorescing cells (R) separated by areas of CD38 ^- cells that had no red fluorescence (N). RBCs had faint purple autoflorescence (white arrows) (CD38 Immunofluroscence x400). ( b) High power magnification of CD38 ⁺ cells in lingual tonsil tissue. These cells have a circular or oval profile with a narrow space of cytoplasm surrounding the nucleus, consistent with being lymphocytes. The red fluorescence is located on the cell membrane whereas the cytoplasm was negative. These cells are closely associated to one another. This image also shows a blood vessel containing RBCs which glowed in faint purple (white arrow) (CD38 Immunofluroscence x1000). ( c) Representative section of negative antibody control. ( d) Representative section of negative tissue control (periapical scar) (x400). Note the red fluorescing cells represent RBCs (white arrows) which exhibit autofluorescence and were scattered in the tissue or within the blood vessels.