The lymphatic system is a network of lymphoid organs and lymphatic vessels. It transports lymph fluid and helps to clear toxins and other waste from the body’s tissues. Lymphocytes use the lymphatic ...

John F. Kennedy’s granddaughter has disclosed that she has terminal cancer and may live for only about another year. Tatiana ...

In the animal kingdom, penises can be spiked, split, corkscrewed—even detachable. They're one of the most diverse structures ...

Over the past decade, intensive studies have shown that the brain's meningeal lymphatic system acts as the brain's "waste disposal network," maintaining homeostasis by clearing metabolic waste and ...

Feline immunodeficiency virus, or cat FIV, is a retrovirus infection first discovered in cats in the U.S. The virus is often referred to as cat HIV or cat AIDS because it has a similar effect on ...

This delta in north-west Botswana comprises permanent marshlands and seasonally flooded plains. It is one of the very few major interior delta systems that do not flow into a sea or ocean, with a ...

Zoology is the scientific study of animals. This discipline can include animal anatomy, physiology, biochemistry, genetics, evolution, ecology, behaviour and conservation. A mischievous red squirrel ...