An electron microscope image, colorized, shows different structures of pollen grains, including sunflower, morning glory and primrose. Dartmouth Electron Microscope Facility If pollen allergies are ...

When millions of minuscule pollen grains invade Richmond, we see the yellow powder covering cars and swirling down the sidewalks after rain. Under Becky Collie’s microscope at Allergy Partners of ...

A team of researchers from the Smithsonian Tropical Research Institute is digitizing images of pollen from more than 18,000 plant species from the tropics. These images are being used to train a ...

A single pollen grain. The image was taken using a scanning-laser confocal microscope. These microscopes take many images of a sample at different depths. Each image, or as we call them slice, is ...

For the past 25 years, Susan Harry has been peering into a microscope every spring to count and classify minuscule grains of pollen. It’s a task that can take a few minutes up to an hour and a half at ...