Lymphocytes are white blood cells that help the body fight infection and disease. The healthy range for an adult is between 1,000 and 4,800 lymphocytes per microliter (µL) of blood. Doctors will ...

Narrator: Blood gets around our bodies through a system of blood vessels. To picture the blood vessels, imagine a busy network of roads. And those roads are always full of little vans which are ...

Our blood consists of many cell types that develop through different stages from a precursor type -- the blood stem cell. An international research team has now investigated the developmental ...

Imagine bacteria adhering to the surface of a cell, perhaps at the site of an injury or wound. In response, a white blood cell arrives at the scene. This cell encircles the pathogen with its ...

Examples of multicellular organisms include animals and most species of plants. The following diagram shows the variety of human cell types.

Acquired causes of increased red blood cell destruction can include: A diet rich in key nutrients may help prevent or manage some types of anemia. Daily requirements for vitamins and iron vary ...

This process, known as differentiation, must be precisely regulated to ensure a balanced production of mature blood cells across all cell types. An international team of scientists from ...