What system uses blood to transport nutrients and oxygen around the body?

What type of cell fights off infection?

What is an immune response to something harmless (peanuts, eggs, pollen...)

What do your white blood cells recognize on a pathogen?

What on a coconut cell would cause someone to have an allergic reaction?

What is usually in a vaccine?

What do your white blood cells make when they detect a new antigen?

What would a scientist put in a vaccine to teach your body to fight a pathogen?

If you're sick, what cells does your body need more of?

What type of cell engulfs (eats) pathogens and produces antibodies?

True or False: Antibodies can bind to any antigen.

You only get a disease once because of which immunity?

True or False: Active immunity is how your body remembers pathogens you've encountered before.

True or False: Our immune system remembers a pathogen after the first time you get sick.