Elephants have a much stronger immune system than mice, and they are much more resistant to infection. This is due to a number of factors, including the fact that elephants have a much larger number of white blood cells, which are responsible for fighting infection. Elephants also have a much higher concentration of antibodies, which are proteins that help to destroy foreign invaders. In addition, elephants have a much thicker skin, which helps to prevent infection from entering the body.