Summary
An electron microscope study was made of the specific granules of eosinophil leucocytes in mouse bone marrow. A crystal lattice was apparent in the granule-internum, with a repeating pattern of about 30 Å. The presence of this lattice in stained material in which the usual densities of internum and externum were reversed is taken as supporting the hypothesis that the reversal is a negative staining effect. Very occasionally a myelin-like inclusion was also seen in eosinophil granules.
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Hudson, G., Heap, P. Ultrastructure of the eosinophil granule-internum; the problem of reversed relative density. Z. Zellforsch. 93, 332–335 (1969). https://doi.org/10.1007/BF00332660
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DOI: https://doi.org/10.1007/BF00332660