The neutrophils are the very first responders in our body against any microbial infection. The neutrophils are present in two forms: neutrophil cagers and neutrophil killers. These are the most abundant types of white blood cells in the body. The eosinophils, on the other hand, are responsible for protecting us against parasitic infections, diseases of the nervous system and spleens, and allergies. Eosinophils discharge the chemicals over parasites for destroying them.