In this image, red is the color of absorption. The red cells in this image are enterocytes, which line the walls of your small intestine and are responsible for absorbing nutrients from the food you ...

Neurons are the main cells of the nervous system. They perform a wide array of complex functions in the body. To achieve this, neurons need to be able to make connections with other neurons. During ...

This Malayan jungle nymph may look like a rather prickly character, but the species is actually a gentle giant. In fact, it’s one of the largest and heaviest insects in its family, weighing up to 65 ...

It’s widely known that malaria is spread by mosquitoes. But how often do you get to see the mechanics of that process up close? Here, you can see red malaria parasites in a single drop of mosquito ...

We mainly curse mucus as we are blowing it from our noses or coughing it up from our lungs because of some allergy or ailment. However, mucus plays a key role in defending our bodies from illness.

The small bumps you can see on the tip of your tongue when you look at your tongue in the mirror are taste papillae. And at the back of your tongue are large taste papillae, with deep trenches lined ...

This colorful fan of cells from the eye of a developing zebrafish offers a window into the location of specific cell types and their organelles within a growing eye. Get a closer view of the image Get ...

You might conclude that this peacock moth caterpillar is having a bad hair day. But that array of green and black spikes has a purpose – to protect the creature from predators, by packing a mean sting ...

The blue spiral in the center of this field of green and white cells looks as if it might be a seashell. However, it is actually the cochlea of a newborn mouse. The cochlea is an organ in the inner ...

Unlike prokaryotic cells, all eukaryotic cells have nuclei. Nuclei house most of a cell’s genetic information – much of it in the form of DNA – making a nucleus a sort of blueprint for building future ...

This calleta silkmoth caterpillar is covered with spiked spheres all over the top and sides of its body; their purpose is to discourage predators. Native American tribes in the American southwest dry ...

Imagine living your life with a 10-foot–long straw fastened to your face, like this acorn weevil does. That protrusion, called a rostrum, is highly useful for the weevil, however, allowing it to feed ...