Measure and monitor HHMI’s institutional greenhouse gas emissions at the two campuses we operate and look for strategies on greenhouse gas reduction at both campuses. Harness the tremendous community ...

What am I looking at? These images are a series of 1-millimeter-thick slices from front to back through the brain of a mouse, with ChAT neurons (1) in purple and pyramidal neurons (2) in green. The ...

During pregnancy and breastfeeding, milk-producing cells that surround the branching network of ducts in the breast swell to form spherical groups called alveoli. These alveoli are where milk is ...

This vivid chameleon embryo has been stained to highlight the bones and cartilage of its skeleton. You can also see some of its developing internal organs. This vivid chameleon embryo has been stained ...

Pyramidal neurons are a very common type of neuron in the brain. Their cell bodies have a unique pyramidal shape that is the source of their name. They make up about two-thirds of all neurons in the ...

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 ...

Every process has a beginning and end, but sometimes the middle segment is the most interesting. This is an image of a neural stem cell in the midst of the process of differentiating into a neuron. In ...

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 ...

Obviously, the beard on this lizard is not like the beard that a human can grow. However, the spiked scales around its neck and face look similar enough to a human beard that this creature is commonly ...

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 ...

What am I looking at? This is an image of a fluorescently labeled fruit fly ovary, composed of multiple ovariole strands, each containing multiple developing egg chambers. The eggs are dark ...

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 ...