frontal-cortex: Scanning electron microscope picture of a nerve ending that has been broken open to reveal the synaptic vesicles beneath the cell membrane. Image by Tina Carvalho. The Cell: An Image Library
WATER BEARS IN SPACE! The water bear, or TARDIGRADE, is so small it measures in angstroms, not millimeters. The Swedes sent some into space in The tiny critters survived the vacuum of space, the intense cold and radiation for 8 days!
This image is of a colour-enhanced human egg sitting on a pin. The egg is coated with the zona pellucida, a glycoprotein that protects the egg but also helps to trap and bind sperm. Two coronal cells are attached to the zona pellicuda