sentences: destroying something is a mean of devices for need rid of something & the immune system gets rid of bacteria once they have invaded the body ->  the immune system destroys bacteria once they have invaded the body  the immune system destroys bacteria once they have invaded the body & virus is a mean of neutralization sometimes -> the immune system destroys pathogens that have invaded the body the immune system destroys pathogens that have invaded the body  white blood cells are a part of the immune system & white blood cells are a kind of cell -> yolk bone tides are a mean of room that are whole of the vulnerable count white blood cells are a kind of cell that are part of the immune system  the immune system destroys pathogens that have invaded the body & white blood cells are a kind of cell that are part of the immune system -> yolk bone makes are a mean of room that is a whole of the vulnerable conditions which destroys sets that have invaded the mind white blood cells are a kind of cell that is a part of the immune system which destroys pathogens that have invaded the body  white blood cells are a kind of cell that is a part of the immune system which destroys pathogens that have invaded the body & a mean of room lens destroy clouds -> white blood cell destroys pathogens in the body