31,000-Year-Old Skeleton Reveals Oldest Known Surgery
A Stone Age individual’s left leg healed after being amputated just above the foot, allowing them to survive for six to nine years after the procedure was performed, researchers say.
31,000-Year-Old Skeleton Reveals Oldest Known Surgery
31,000-Year-Old Skeleton Reveals Oldest Known Surgery
A Stone Age individual’s left leg healed after being amputated just above the foot, allowing them to survive for six to nine years after the procedure was performed, researchers say.
A Stone Age individual’s left leg healed after being amputated just above the foot, allowing them to survive for six to nine years after the procedure was performed, researchers say.
Researchers are going beyond fecal samples to understand how the patterns of commensal microbes in the gastrointestinal tract influence development and health.
New techniques have shown that people reached the New World far earlier than the long-standing estimate of 13,000 years ago, but scientists still debate exactly when humans arrived on the continent—and how.
Diverse lines of evidence point to humans’ presence in the New World long before the dawn of Clovis culture. But rewriting this chapter of human history raises many questions about how these early people came to inhabit these continents.
Multiple white tailed deer tested positive for SARS-CoV-2 likely transmitted from humans, a study finds, indicating the species could act as a reservoir for the virus.
Researchers link the ability of the cells to bind and present DNA from pathogens and cell death to anemia, which is common in COVID-19, and immune activation.
Engineered antibodies trap and immobilize human sperm in the reproductive tract of female sheep, paving the way for possible use as a nonhormonal contraceptive in people.
Some of the blood specimens collected in the United States for the NIH’s All of Us research program starting on January 2, 2020, have antibodies against SARS-CoV-2.
Researchers identify live bacteria in fetal guts, skin, lungs, and placentas that activate memory T cells, indicating that early exposure to microbes could help educate the developing immune system.
Researchers integrated information from 45 protein, metabolite, and immune data points to identify a window two to four weeks before a pregnant person will go into labor.
A new analysis of the hand of the 4.4-million-year-old partial skeleton of Ardipithecus ramidus indicates that the human ancestor may have climbed and swung through trees like chimpanzees do.
Researchers determined that when introduced into damaged mouse or donated human livers, these lab-grown tissues could integrate into bile ducts and function normally.
Compared with Zika and cytomegalovirus, the virus that causes COVID-19 appears to have a harder time penetrating the placenta and moving to a woman’s unborn baby.