Only 10% of the cells in a human body are human, but that 90% is only 2-3% of human body weight. https://www.nih.gov/news-events/news-releases/nih-human-microbi

Only 10% of the cells in a human body are human, but that 90% is only 2-3% of human body weight. https://www.nih.gov/news-events/news-releases/nih-human-microbiome-project-defines-normal-bacterial-makeup-body https://www.nih.gov/news-events/news-releases/nih-human-micr...