Content by The Scientist

The entire underbelly of a newly discovered glassfrog species (Hyalinobatrachium yaku) is see-through, allowing the beholder to peer into its heart. 

The fluid motions of a T cell’s microvilli, scanning their environment for antigens, are captured in 3-D and in real time.

The multihued Portuguese man o' war (Physalia physalis), a jellyfish look-alike, is known for its painful sting. 

Computed tomography (CT) scans give scientists a window into the tiny and delicate internal structures of various thorn snail species (Carychium). 

Pea plant (Pisum sativum) roots that have been inoculated with engineered Rhizobia bacteria glow in the presence of certain proteins. 

Artists paint with colorful microbes on agar palettes for the American Society for Microbiology's Agar Art Contest.

Inspired by the Sorting Hat from the Harry Potter series, scientists aptly dubbed this pointy spider Eriovixia gryffindori, after the fictional yet formidable wizard Godric Gryffindor.   

Spotted salamander (Ambystoma maculatum) embryos are tinted green by the oxygen-producing algae (Oophila amblystomatis) that grow inside.

An eastern snapping turtle (Chelydra serpentina), known for its formidable jaw, sits motionlessly. 

A current moved this prehistoric ammonite’s lifeless shell across the seafloor, producing an almost 28-foot-long fossilized scratch. 

Cells within the growing root tip of an Arabidopsis plant elongate and divide, driving it forward in search of nutrients.

Adult olfactory stem cells can be used to grow a smattering of cells important for smell, including scent-sniffing neurons and structurally supportive sustentacular cells. 

Researchers made a 3-D reconstruction of one of neurobiology's most famous brains—that of Henry Gustav Molaison (HM).

Using human induced pluripotent stem cells, scientists grew podocytes, cells that attach to the kidney's glomeruli and help filter blood.  

Fossilized gas bubbles, formed from being trapped by microbial biofilms, provide the oldest signature of life in terrestrial hot springs.