Centers for Disease Control researchers say it is one of the strangest and most unsettling cases they have ever encountered. The researchers say that scans of a very ill man in Colombia revealed what "looked like cancer, but the tumors were composed of cells that were not human."
The presence of cancerous cells in tapeworms also raises numerous questions about where the mutant cells originated — from something in the environment? — and whether other organisms that live inside or on people that could transmit cancer cells. In recent years, many scientists have emphasized that the human body's ecosystem is only made up of 10 percent human cells but 90 percent microbial cells.
The presence of cancerous cells in tapeworms also raises numerous questions about where the mutant cells originated — from something in the environment? — and whether other organisms that live inside or on people that could transmit cancer cells. In recent years, many scientists have emphasized that the human body's ecosystem is only made up of 10 percent human cells but 90 percent microbial cells.