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Ic Im In Io It
Inf Ing Inj Int Inv
Infe Infl Infr

Infections

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An infection is the invasion of body tissues by disease-causing pathogens, such as bacteria, viruses, fungi, or parasites. Infections can occur anywhere in the body, but they are most common in the skin, respiratory tract, digestive tract, and urinary tract. When a...

Inflammation

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Inflammation is a natural immune response that occurs when the body reacts to injury, irritation, or infection. It is characterized by redness, heat, pain, and swelling and serves as a protective mechanism to help the body heal and repair damaged tissues. There are...

Infrared light

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Infrared light is a type of electromagnetic radiation that is invisible to the human eye and makes up approximately 60% of natural sunlight. It has longer wavelengths than visible light and shorter wavelengths than radio waves. Infrared light is emitted by warm...