In breast cancer, a biopsy is the only diagnostic procedure that can determine if a suspicious lump or area is cancerous. However, in the U.S., between 75% and 80% of breast biopsies are benign.

The discovery fundamentally changes the understanding of a structure in the avian eye that has been misinterpreted for centuries.

The light-sensitive tissue of birds’ eyes is not supplied with oxygen by blood vessels – instead, it powers itself with a ...

Neural tissue normally dies quickly without oxygen. Yet bird retinas—among the most energy-demanding tissues in the animal ...

Scientists have uncovered a surprising reason why some chronic wounds refuse to heal, even when treated with antibiotics. A ...

The Buffalo Bills have been preparing for the altitude in Denver prior to their playoff game against the Broncos.

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxaemia) give ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxemia) give ...

These underground rodents are the first mammals found to actively choose air with lower-than-normal oxygen levels. Their ...

To take a pulse oximetry reading, turn on the device, place it on your fingertip, sit still, and wait for a stable reading. Normal oxygen saturation levels range from 95% to 100%; levels below 92% may ...