Content by The Scientist

The reddish lines visible inside this butterfly egg are the future mandibles of a speckled wood butterfly (Pararge aegeria) caterpillar.

The bow-like anatomical feature that allows a froghopper (Philaenus spumarius) to jump 100 times their body length naturally fluoresces blue.

This model of a neural network, with individual nuclei labeled in blue and neuronal processes in red, was made by culturing rat hippocampal neurons on a silicon disc coated with a fluorescent amino acid (in green).

This tobacco plant glows by expressing a luciferase gene.

A salmonella outbreak threatens as the FDA, CDC, and USDA limp along, national laboratories are on the brink of closing, and some patients are admitted to the NIH hospital.

A scanning electron micrograph of the surface of a wasp (Vespula vulgaris) antenna

A transverse section through a Japanese freshwater eel (Anguilla japonica), which naturally expresses a green fluorescent protein called UnaG in its muscle cells

This female spiny orbweaver spider (Gasteracantha cancriformis), at 6 millimeters long, dwarfs her 3 millimeters-long mate.

Cholesterol (blue and orange splotches) visualized using polarized light microscopy

This yellow triplefin (Enneapterygius abeli) is capable of seeing and producing its own red fluorescence.

A melanoma tumor, imaged using photoacoustic microscopy

A female fly's reproductive tract contains sperm cells from males of two different species, Drosophila mauritiana (red sperm heads) and Drosophila simulans (green sperm heads).

The larvae of the flatworm that causes schistosomiasis (Schistosoma mansoni) develop inside the muscle of a snail host.

The tilt of these embryonic mouse cell cilia regulates developmental asymmetry.

October 2013's selection of notable quotes