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White blood cell
White blood cells (also called leukocytes or immune cells) are cells which form a component of the blood. They help to defend the body against infectious disease and foreign materials as part of the ... > more -
Evolution of the eye
The evolution of the eye has been a subject of significant study, as a distinctive example of a homologous organ present in a wide variety of species. The development of the eye is considered by most ... > more -
Cottontop Tamarin
The Cottontop Tamarin (Saguinus oedipus), also known as the Pinche Tamarin, is a small New World monkey weighing less than 1lb (0.5 kg). It is an endangered species found in tropical forest edges and ... > more -
Groundwater
Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of geologic formations. A formation of rock/soil is called an aquifer when it can yield a useable ... > more -
Tocopherol
Tocopherol, or Vitamin E, is a fat-soluble vitamin in eight forms that is an important antioxidant. Vitamin E is often used in skin creams and lotions because it is believed to play a role in ... > more
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