Structure, function, molecular biology and biotechnology. Illustrations must be restricted to the minimum needed to clarify the text. Previously published illustrations are usually not accepted. Data given in graphs or tables should not be repeated in the text. All figures, whether photographs, graphs, or diagrams, must be mentioned in the text, and the top of the figure, the title of the paper, the author's name, and the figure number should be marked lightly on the reverse side in soft pencil.
All figures are to be numbered consecutively throughout and submitted separately.
Whenever possible, several figures should be grouped into a plate. Illustrations prepared in digital form must be in accordance with the technical instructions for manuscripts and illustrations in electronic form that are published in this journal. High-quality prints or good originals should be submitted. The inscriptions should be clearly legible. Letters 2 mm high are recommended.