Bacteria that live in the digestive tracts of animals may influence the adaptive trajectories of their hosts.

Organisms with unusual genomes are helping scientists investigate gene regulation, evolution, and development.

Aminoacyl-tRNA synthetases, which help translate the genetic code into protein, also function in angiogenesis, fat metabolism, and more.

With human research trials resulting in dozens of successful deliveries in the US and abroad, doctors move toward offering the surgery clinically, while working to learn all they can about uterine and transplant biology from the still-rare procedure.

A selection of comments from our readers

The COVID-19 pandemic is still with us. Biomedical innovation has rallied to address that pressing concern while continuing to tackle broader research challenges.

Bacteria in the gut influence the production of antibodies and themselves secrete metabolites. In a pregnant woman, these compounds may influence immune development of her fetus.

From a rapid molecular test for COVID-19 to tools that can characterize the antibodies produced in the plasma of patients recovering from the disease, this year’s winners reflect the research community’s shared focus in a challenging year.

On June 5, 1981, a one-and-a-half page paper in Morbidity and Mortality Weekly Report (MMWR) noted cases of Pneumocystis carinii pneumonia in five gay men in Los Angeles. The men also suffered from cytomegalovirus (CMV) infections and candidal infections of the mucosa,1 and they used recreational inhalant drugs. The editorial note pointed out: "Pneumocystis pneumonia in the United States is almost exclusively limited to severely immunosuppressed patients." "I was sitting in my office in Buildi

By Judy Lieberman Master of the Cell RNA interference, with its powerful promise of therapy for many diseases, may also act as a master regulator of most—if not all—cellular processes. RNA silencing. Computer artwork showing a length of RNA (yellow with red rings) bound to an RNA-induced silencing complex (RISC). © Medi-Mation Ltd / Photo Researchers, Inc. ne of the biggest surprises in biology in the past d