Each of us has enough DNA to reach from here to the sun and back, more than 300 times. How is all of that DNA packaged so tightly into chromosomes and squeezed into a tiny nucleus? Long, slender DNA ...

Colorized scanning electron micrograph of cells heavily infected with COVID-19 (SARS-CoV-2) virus particles (orange). The inset is an artist’s rendition of a single virus with its spike proteins — the ...

THE detail seen in a highly magnified electron micrograph is to-day limited more by a lack of contrast in the image than by any lack of resolution in the microscope, which is now usually capable of ...

This colorized transmission electron micrograph shows SARS-CoV-2 virus particles (orange), isolated from a patient. Credit: NIAID via NIH Disclaimer: AAAS and EurekAlert! are not responsible for the ...

After 15 years of research, the late, Nobel Prize-winning, scientist Roger Tsien and his colleagues bring multicolor labels to electron microscopy. Three new discoveries have already emerged. Every ...