Hi! @poleev, You have copied 60% text from this link. It is not right to copy other's content. Try writing your own post. It will be good for you. You can only take ideas from others' content. But other's content cannot be completely copied. I hope you understand.
I am the author of this text previously published at http://www.enzymes.at/download/Kreislauf.pdf
Add your steemit account link or not. Then there will be no doubt.