This genetically modified yeast can convert sugar into powerful opioid drugs. Scientists working with the modified yeast strains are required to register them with the Drug Enforcement Administration and keep the yeast under lock and key.
Courtesy of Christina Smolke/Stanford University
Researchers say that inside the head of the worm C. elegans, an antenna-like structure at the tip of the AFD neuron (highlighted in green) is the first identified sensor for Earth's magnetic field.
Prion protein can be infectious, spreading from cell to cell in the brain. Here four nerve cells in a mouse illustrate how infectious prion protein moves within cells along neurites — wire-like connections the nerve cells use for communicating with adjacent cells.
Harvard University student Elana Simon introduces President Obama before he spoke at the White House Friday about an initiative to encourage research into more precise medicine.
Mandel Ngan/AFP/Getty Images
A scorpion fly perches on a leaf at the research farm where Lindgren studied the decomposition of human remains. Scorpion flies are among the first insects to visit a corpse.
Courtesy of Natalie Lindgren