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Immune Cells in Action

1 minutes 40 seconds

Now Playing As: Captioned (English) (change)

Take a look through a microscope at a virus attacking a cell and see the immune system in action. Viruses continue to replicate until they break apart the host cell and start spreading throughout the body, destroying healthy cells along the way. The immune system overpowers a virus with white blood cells and creates the antibodies that kill the same types of viruses quickly if they return.

Media Details

Runtime: 1 minutes 40 seconds

Topic: Science
Subtopic: Biology, Cells
Grade/Interest Level: 7 - 12
Standards:

Release Year: 2002
Producer/Distributor: PBS Learning Media

Lab equipment in background with illustration of DNA strand, question marks, and an arrow pointing to the horn on a unicorn. Caption: We'd want to know what parts of the genome make the horn.

Lab equipment in background with illustration of connected neurons. Caption: glia activate and help fix the neurons

Still image from: 4 Awesome Discoveries You Probably Didn't Hear About This Week (Episode 36)

A caterpillar curled in a circle, mostly encased in a protective covering. Caption: Then the caterpillar goes to sleep.

Green foliage with a pink flower overlooks the shoreline. Spanish captions.

Closeup of a bright orange and blue tropical flower. Spanish captions.

A seal swimming underwater near the ocean floor. Caption: still remain to satisfy diurnal scavengers

A warthog with long tusks curving towards its body and leathery skin covered in mud. Caption: we can see that each has a beauty all its own.

Person driving a large piece of industrial farm equipment. Caption: towards managing agricultural systems

Large tent with open sides covering people seated and standing around tables holding gear and other items. Two people carefully placing bones in the outline of a body. Caption: for what early bipeds looked like.