Micron should be abbreviated mm. Illustrations are printed either in one column or the full width of a page of the journal, so plan accordingly. Drawings and lettering must be dark black on white, blue tracing, or blue-lined paper. Letters and numbers should be at least 3 mm high after reduction. Several drawings or photographs may be grouped together to fit a page.
Photographs are to be high contrast.
High contrast is equally important for histological photographs. Each figure must be cited in the text. Magnifications in captions are not acceptable. All illustrations should be mounted, numbered, labeled or lettered, i.e. ready for the printer. A caption should summarize what is shown in an illustration, and should not duplicate information given in the text.