American biologist David Baltimore criticized a fellow scientist who claims he has edited the genes human embryos during the Second International Summit on Human Genome Editing at the University of Hong Kong.
China News Service/VCG via Getty Images
Genetics researcher He Jiankui said his lab considered ethical issues before deciding to proceed with DNA editing of human embryos to create twin girls with a modification to reduce their risk of HIV infection. Critics say the experiment was premature.
DNA sleuthing helped identify Joseph James DeAngelo, the suspected East Area Rapist, who was arraigned in a Sacramento, Calif., courtroom in April.
Randy Pench/Sacramento Bee/TNS via Getty Images
A scientist from the Nadiya Clinic in Kiev, Ukraine inserts a needle into a fertilized egg to extract the DNA of a man and woman trying to have a baby. The clinic is combining the DNA from three different people to create babies for women who are infertile.
Scientists placed two clusters of cultured forebrain cells side by side (each cluster the size of a head of a pin) in the lab. Within days, the minibrains had fused and particular neurons (in green) migrated from the left side to the right side, as groups of cells do in a real brain.
Courtesy of Pasca lab/Stanford University
Smallpox virus, colorized and magnified in this micrograph 42,000 times, is the real concern for biologists working on a cousin virus — horsepox. They're hoping to develop a better vaccine against smallpox, should that human scourge ever be used as a bioweapon.
Chris Bjornberg/Science Source
The first sign of successful in vitro fertilization, after co-injection of a gene-correcting enzyme and sperm from a donor with a genetic mutation known to cause hypertrophic cardiomyopathy.
Courtesy of OHSU
EVATAR is a book-size lab system that can replicate a woman's reproductive cycle. Each compartment contains living tissue from a different part of the reproductive tract. The blue fluid pumps through each compartment, chemically connecting the various tissues.
Courtesy of Northwestern University