Now, what exactly is the difference between these two Immunity systems? Well, this takes in effect immediately, as soon as that pathogen actually enters our body, while our acquired Immunity takes several days to actually kick in. Now, the innate Immunity doesn't actually involve any process of learning, but the acquired Immunity requires the process of learning. For example, if a bacterial cell actually infects our body, then the next time that same type of cell infects our body, it's the acquired immune system that is responsible for initiating the response that recognizes that specific type of bacterial cell and kills off that bacterial cell. So, this is very specific to the type of cells, the type of pathogens it actually attacks. While this type of system does not actually discriminate, it attacks all different types of pathogens equally.