Graphical abstract - figure representing the main point of the study and article. It makes your article more attractive and clear for the reader. Graphical abstract will be located at the web page of your article.

Requirements:

• PNG or TIFF format, size in pixels - max 200 (height) х 500 (width)
• font must be large enough to make the text readable
• provide only the minimum amount of information, only the most important one

Insert graphical abstract into the main article file (on the last page) and into the archieve with figures and cover letters. File name - ga.png

Now the graphical abstract is optional. In the future, it will become obligatory for all articles.