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 ...

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 colorful threads in this image are muscle fibers. This spotted rainbow illustrates a potential gene therapy approach to treating Duchenne muscular dystrophy (DMD) – a rare, debilitating, and fatal ...

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 ...

Who wants a caterpillar ride? Actually, there are several reasons why you shouldn’t jump on the back of these saddleback slugs, despite their common name. First, they are tiny. Second, they have no ...

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 ...

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 ...

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 ...

This neon marvel highlights the muscles of a developing aquatic invertebrate known as a moss animal, also known as a bryozoan – a member of the phylum Bryozoa. The organism gets its common name from ...

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 ...

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 image shows a thistle mantis fastidiously cleaning one of its antennae. Males use these antennae to detect pheromones (reproductive chemicals) released by females of the species that are ready to ...