Categories
Microbiology Physiology & Disease

A glimpse into the immune system

One morning, you hang out with a friend who is coughing and sneezing. You spend some time together, you wish them well, and go home. A few days later, you wake up with a sore throat, a runny nose, and maybe a fever. What happened? You quickly remember your friend. You probably caught a virus. […]

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 […]