6. In a recent study, scientists investigated the effects of microorganisms naturally found in the body. They raised mice in two different environments and compared their immune system functions in response to a bacterial infection. Their data are shown. Which conclusion about the microorganisms naturally found in the body is most likely supported by these data? * 1 point All microorganisms are harmful to the body. Microorganisms are important in promoting healthy immune systems. All bacteria in the body increase the effectiveness of the immune system. Bacteria that cause infections decrease the number and variety of immune cells in the body.
