Researchers are working to create detailed maps of the human body at the cellular level, with some focusing on the gut microbiota and its responses to therapeutic drugs. The effort involves mapping cells and their functions, with the goal of gaining a better understanding of the body's cellular world. It appears that progress is being made, with some outlets reporting that entire systems, such as the gut, are being mapped at single cell resolution, although the scope and specifics of these achievements are not entirely clear.