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Microbiology Physiology & Disease

How to identify Gram-positive cocci

One day, you woke up with a mild irritation on your arm. The skin was red and itchy. You paid no attention. But the next day, you noticed more bumps filled with pus. It looked concerning, so you decided to check it out with your dermatologist. The doctor collected a sample from the wound and […]

Categories
Microbiology

What are viruses?

Viruses are microscopic parasites whose size belongs to the nanometer scale. They can invade the cells of other organisms in order to reproduce, since they don’t have the ability to do that independently, outside of their hosts. You might be familiar with the viruses infecting people but all the living organisms on our planet are […]