This looks like a “little purple pill” but is actually a fruit fly embryo undergoing a wave of cell division, traveling from one end of the embryo to the other. Look closely and try to guess which ...

In this zebrafish liver, the blood vessels glitter in gold and the bile ducts gleam in neon blue. This image highlights the close relationship between the circulatory system and the cells of the liver ...

While this group of colorful neurons was grown in a dish from stem cells, in the body neurons like this are responsible for sensing pain. There is a specialized subset of sensory neurons called ...

What am I looking at? This is a video showing a section of the cerebral cortex from a mouse. The video was taken by moving the focal plane of a microscope from the bottom of a thick section of brain ...

The tendrils that extend from so-called killer T cells like the one in this image help them latch onto and destroy infected or cancerous cells in the body. Learn more Get a closer view of the image ...

Can you make heads or tails of these two colorful beasties? They’re caterpillars of a kind of moth called a slug moth – so called because their legs are covered with suction cups, so they move like ...

This might be a quintessential face for radio by human standards. But for this whirligig beetle, its face – especially its mandibles (mouthparts) – is perfectly designed for hunting and scavenging.

Beauty is in the eye of the beholder – but since the northern mole cricket spends most of its time underground, there aren’t many other creatures that get a look at this burrowing insect’s furry face ...

Can you guess what the colorful, bushy cells in this image are? They may look like sea anemones growing on a coral reef, but they’re actually cells from the trachea of a mouse. And you might be ...

What am I looking at? This is a time-lapse video showing the dynamic nature of the ER in monkey kidney cells as they undergo cell division. The density of the ER network is represented by the ...

These pink and purple ovals may look like colorful hard candies, but you should avoid eating them. They are enteropathogenic Escherichia coli – bacteria that can cause serious illness and even death.

This hickory horned devil caterpillar is doing some acrobatics while eating the leaf of a tree. These caterpillars get their name from the bright red and black face and horns adorning the thoracic ...