Some Powerpuff Girls Theory

Ok, so the Powerpuff Girls are made of sugar, spice, everything nice, and chemical X, right? Well, I noticed that no human cells were added. Since the first rule of cells in that all living organisms are made of cells, that means the Powerpuff girls aren't really people. They would be an artificial intelligence. However, another possibility would be that Chemical X altered the molecular structure of already inseerted ingredients to form cells.