Write a 2000 word article

I need a 2000 word article written in English that will be optimized for the following keywords which are also the topic/theme of the article: strange facts about rh negative blood rh negative blood type origin alien blood type rh negative alien rh negative bloodline rh negative blood origin One will have to do a certain amount of research in order to write this article. I don't want some garbage to be written, but it doesn't have to be an academic dissertation either. :)