This is the underside of a gecko, offering a great view of their incredible feet and toes, which allow them to climb on nearly any surface. Get a closer view of the image Get a closer view of the ...

If the color purple makes you happy, you’re not alone. The purple cells in this image produce serotonin which plays a key role in the control of mood and emotions. If the color purple makes you happy, ...

The human immune system usually works wonders, protecting us from all sorts of diseases. However, if the immune system goes into overdrive, it can become even more dangerous than the diseases it ...

What would you see if you peered inside a human small intestine? Here’s a glimpse at its structure, revealing a community of cells with different functions. A biopsy like this is generally very small ...

This time-lapse video shows the development of the nervous system in a fruit fly embryo as it transitions to the larval stage. Fruit flies have a high reproduction rate and a very short gestation ...

These dark blue tubes splattered with red and green are fruit fly muscles. This image shows where the nerves and the muscles meet in the larva of a fly. These dark blue tubes splattered with red and ...

Confetti mice are very useful in research because they allow scientists to track which cells produce which proteins based on their color under a fluorescent microscope. These mice are particularly ...

This colorful “explosion” is a choroidal neovascular (CNV) complex in the retina of a rat. A CNV complex is an abnormal growth of blood vessels under the retina after an injury. This colorful ...

What am I looking at? This is a colored scanning electron microscopy image of a human red blood cell infected with the parasite that causes malaria. The infected cell is blue (1), and the uninfected ...

The ER is the protein synthesis and processing center of a cell and is also responsible for the synthesis of some lipids. There are two types of ER in a cell – rough ER and smooth ER – that together ...

We often look up to see stars shining down from the sky. However, here we are looking down at microscopic star-shaped trichomes (a scientific term for “hair”) on the leaf of a showy deutzia plant. We ...

While this may look like a campfire scene from a bad dream, these are all rotifers. About 1,800 species of these tiny animals have been described to date. They live in fresh water all over the world, ...