CELLULAR & MICROSCOPIC BIOLOGY

Cellular and microscopic biology allow scientists to study cells and microorganisms. Cellular biology is the study of cells, including their structure and function. Microbiology is the study of microorganisms, which include algae, bacteria, and viruses.
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Quiz: My Little Bacteria: Friendship Is Magic

Not all bacteria are our mortal enemies. Some are our friends and, yes, we have been known to go on amazing adventures with them. They're not as cute as talking ponies, but they help out in amazing ways. Let's see just how well you know the world of "good" bacteria.

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  • 10 Misconceptions About the Flu

    10 Misconceptions About the Flu

    Lots of Americans believe that getting the flu is no worse than getting a cold. Or that the flu vaccine can give them flu. We separate truth from fiction. See more »

  • 10 Oldest Known Diseases

    10 Oldest Known Diseases

    You won't find some of history's biggest killers on this list, but you will find at least one disease that will make you want to bite something and another that might make you break out in "elevated pustules." Curious yet? See more »

  • 10 Weirdest Sources for Antibiotics

    10 Weirdest Sources for Antibiotics

    Worried that we're running out of effective antibiotics? Never fear. Scientists are plundering cockroach brains and other surprising sources to create new lifesaving medications. See more »

  • A Germ by Any Other Name: 'Stomach Flu' and Other Medical Misnomers

    A Germ by Any Other Name: 'Stomach Flu' and Other Medical Misnomers

    Most of us know what causes a case of the Mondays or tennis elbow -- Mondays and racquet sports -- but what about other conditions and illnesses? You can't always judge a disease by its name. Do you know what causes the stomach flu? See more »

  • Are extinct viruses coming back thanks to climate change?

    Are extinct viruses coming back thanks to climate change?

    Deep in Siberia, scientists discovered a giant, amoeba-eating virus. This may sound like straight-up sci-fi, but it's actually happened a few times. Is climate change to blame for resurrecting these ancient bugs? See more »

  • Can drug-resistant bacteria lose their resistance?

    Can drug-resistant bacteria lose their resistance?

    A post-antibiotic world is a scary thought. Without antibiotics to cure our infections, a public health crisis is inevitable. In the absence of new drugs, is it possible to reserve the resistance of those bacteria? See more »

  • Does your body really replace itself every seven years?

    Does your body really replace itself every seven years?

    That bully who tormented you in school might not seem to have changed much when he put you down at the 10-year reunion. But he's practically a whole new person. See more »

  • Has a video game cured HIV?

    Has a video game cured HIV?

    Molecular biology isn't all fun and games -- except when it is. How did a bunch of gamers handily solve a decade-old problem in three weeks flat? See more »

  • How AIDS Works

    How AIDS Works

    Many world leaders agree that we're losing the war on AIDS. AIDS is one of the deadliest human diseases ever -- worldwide, it claims approximately 5 lives every minute of every day. Learn how the AIDS virus attacks the body. See more »

  • How are viruses, viroids and prions related?

    How are viruses, viroids and prions related?

    Viruses, viroids and prions are microscopic, infectious particles with a common, despicable goal — but the way each goes about achieving that goal is different. See more »

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