The new technique uses an enzyme found in vertebrate immune systems to attach nucleotides to a growing strand.  

Some scientists are not yet convinced that the list is accurate.

The surviving animals may have evolved genes that provided an advantage in fighting the disease.  

Acute bouts of diarrhea could have lasting effects on the microbiota and host immune system activation, a mouse study suggests.

Vaccination reduced the risk of death by two-thirds for children with no other health problems.  

Two studies find the genome-editing technique works best when cells have a faulty DNA-damage response that’s frequently present in cancers.  

A newly described species of shrimp, Odontonia bagginsi, has been named after Bilbo Baggins. 

The receptors, found in so-called elite controllers who don’t need medications to keep the virus in check, suggest a new path toward immunotherapy.

A small study based on circulating RNA in the blood of moms-to-be describes a technique that could be used to help predict who’s most at risk of preterm labor.

Researchers discover that a layer of human breast tissue is not one but two distinct cell types.