The data are original electron micrographs from the lab of the late Dr. Burt Endo of the USDA. These data were digitized from photographic prints and glass plate negatives at 600 DPI as 16 bit TIFF files. This second version added 10 new ZIP files from the Endo data collection. "Endo folder database.xlsx" is updated to reflect the addition. Information in "ReadmeFile name formatting.docx" remains the same as in V1.
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