Genes & Cells

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microscope image of plaques in a human artery

HAZARDOUS CLUMPS  The protein collagen (green) coats plaque (red) on the wall of a human artery. These small pockets of plaque are vulnerable to breaking away and possibly triggering a heart attack. 

HEY LOOK  The spherical bacteria Synechocystis (shown here in false color) can use their single-celled bodies almost like eyeballs. A light shining up from the bottom of this image passes through the cells and focuses on the far side (white arrows highlight examples of focused light). A laser light source in the center (red dot) helped test which way the cells move in reaction to bright spots of light. 

raspberry leaf and microbes

This raspberry leaf (in a closeup, colorized electron micrograph) is covered in a biofilm of bacteria and fungi. Rosmarinic acid may keep bacterial visitors from overtaking a plant.

Genes & Cells

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