I need a 15 sentences summery of this article. Please include a short conclusion paragraph. Thanks 1. Introduction Fifty years ago, Lynn Margulis,…

I need a 15 sentences summery of this article. Please include a short conclusion paragraph. Thanks
1. Introduction
Fifty years ago, Lynn Margulis, who at the time signed her work as Lynn A. Sagan, published in this journal an article titled “On the origin of mitosing cells” (Sagan, 1967