Some invaders are too big to gobble up. Eosinophils fight them by spraying out strong chemicals from their bright little grains.
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Eosinophils are a kind of white blood cell. Only a few out of every hundred white blood cells are eosinophils.
Their nucleus usually has two lobes. The rest of the cell is packed with grains that turn bright orange-pink when scientists add a dye.
Many eosinophils leave the blood and live in the lining of your gut.
Eosinophils got their name from a pink dye called eosin. The dye's name comes from an old Greek word for the dawn.
Some invaders, called parasites, are much bigger than a germ. A white blood cell cannot swallow them.
Press Release chemicals on the 3D model and watch the eosinophil spray its grains at the parasite.
By The Magic School Bus. A fun video for kids.
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