This fluorescence micrograph shows the vascular system of a developing chicken embryo, two days after fertilization. Injecting fluorescent dextran revealed the entire vasculature used by the embryo to feed itself from the rich yolk inside the egg.
coccolithophorid marine organism Courtesy of Philippe Crassous Image Details Instrument used: Quanta Family Magnification: 14269 Horizontal Field Width: micron Vacuum: mbar Voltage: 10 Spot: Working Distance: 10 mm Detector: SE
Caffeine crystals by Annie Cavanagh and David McCarthy. This false-coloured scanning electron micrograph shows caffeine crystals. Caffeine is a bitter, crystalline xanthine alkaloid that acts as a stimulant drug.
Diatom Rainbows Sinewy filaments within squirming microscopic diatoms, a type of algae, are artificially rainbow hued as a result of being photographed through polarizing light filters. —Photograph by Michael Stringer/photo courtesy of Nikon Small World
A zebrafish embryo is shown 22 hours after fertilization. (Philipp Keller, Bill Lemon, Yinan Wan and Kristin Branson, Janelia Farm Research Campus, Howard Hughes Medical Institute) 11 amazing images from high-powered microscopes - The Washington Post
A Drosophila melanogaster embryo using in situ hybridization to visualize mRNA expression of the gap gene giant (red) and the pair-rule gene even-skipped (blue), with Sytox Green (Invitrogen) used to localize nuclei.
Promachoteuthis sulcus, a bizarre creature. As you can see, this thing has human looking teeth. It’s a species of promachoteuthid squid and only one specimen has been found to date. It was captured in the Southern Atlantic Ocean at a depth of