A Moment of Science
A recent study suggests that the fast-paced, flickering images on televisions can harm kids' ability to relax and concentrate.
Here’s how innate immunity works. In your bug body there is a fluid called hemolymph, which is equivalent to human blood. If you’re injured, components in the hemolymph interact with specialized cells in your immune system to clot and form a scab that seals off your wound and prevents infection.
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