Here are some types of white blood cells and their roles in fighting germs:
* Neutrophils: These are the most abundant white blood cells and are the first responders to infection. They engulf and destroy bacteria and fungi.
* Macrophages: These cells are larger than neutrophils and can engulf even larger pathogens, like parasites. They also act as "presenters" to other immune cells, showing them what the invaders look like so the immune system can mount a stronger attack.
* Lymphocytes: These cells include B cells and T cells.
* B cells produce antibodies, which are proteins that bind to germs and mark them for destruction.
* T cells directly attack infected cells or help other immune cells fight infection.
There are other white blood cells, but these are the main players in finding and destroying germs.
