SAM KRIEGMAN
In January of this year, researchers used cells derived from a frog embryo to create “manufactured organisms” designed to carry out different tasks. Here, a xenobot shuffles across the bottom of a petri dish.
NIAID-RML
This photo, released in February, shows the characteristic “crown” of spikes on SARS-CoV-2 for which the coronavirus is named.
HELMHOLTZ ZENTRUM MÜNCHEN / ERTÜRK LAB
Scientists in Germany reported in February a new tissue-clearing technique that allows them to view intact human organs such as the kidney (above), brain, eye, and thyroid.
UPMC
This white rat received a leg transplant from a brown rat, and thanks to a new method that mimics the mechanism by which tumors evade detection, the limb survived for more than 200 days, scientists reported in March.