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2. Free-radical theory of aging - Wikipedia

   en.wikipedia.org/wiki/Free-radical_theory_of_aging

   The free radical theory of aging states that organisms age because cells accumulate free radical damage over time. [1] A free radical is any atom or molecule that has a single unpaired electron in an outer shell. [2] While a few free radicals such as melanin are not chemically reactive, most biologically relevant free radicals are highly ...

3. Free-radical reaction - Wikipedia

   en.wikipedia.org/wiki/Free-radical_reaction

   A free-radical reaction is any chemical reaction involving free radicals. This reaction type is abundant in organic reactions . Two pioneering studies into free radical reactions have been the discovery of the triphenylmethyl radical by Moses Gomberg (1900) and the lead-mirror experiment [ 1 ] described by Friedrich Paneth in 1927.

4. List of systems of the human body - Wikipedia

   en.wikipedia.org/wiki/List_of_systems_of_the...

   This is an accepted version of this page This is the latest accepted revision, reviewed on 11 December 2024. List of organ systems in the human body Part of a series of lists about Human anatomy General Features Regions Variations Movements Systems Structures Arteries Bones Eponymous Foramina Glands endocrine exocrine Lymphatic vessels Nerves Organs Systems Veins Muscles Abductors Adductors ...

5. Over the Counter: Connecting the dots on the role of free ...

   www.aol.com/news/over-counter-connecting-dots...

   Free radicals have an ominous name and a lot of people misunderstand them, their complex role in our bodies and how to manage them. Over the Counter: Connecting the dots on the role of free ...

6. Oxidative stress - Wikipedia

   en.wikipedia.org/wiki/Oxidative_stress

   Oxidative stress mechanisms in tissue injury. Free radical toxicity induced by xenobiotics and the subsequent detoxification by cellular enzymes (termination).. Oxidative stress reflects an imbalance between the systemic manifestation of reactive oxygen species and a biological system's ability to readily detoxify the reactive intermediates or to repair the resulting damage. [1]

7. Category:Free radicals - Wikipedia

   en.wikipedia.org/wiki/Category:Free_radicals

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8. Composition of the human body - Wikipedia

   en.wikipedia.org/wiki/Composition_of_the_human_body

   Parts-per-million cube of relative abundance by mass of elements in an average adult human body down to 1 ppm. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium ...

9. Radical (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Radical_(chemistry)

   Radical elimination can be viewed as the reverse of radical addition. In radical elimination, an unstable radical compound breaks down into a spin-paired molecule and a new radical compound. Shown below is an example of a radical elimination reaction, where a benzoyloxy radical breaks down into a phenyl radical and a carbon dioxide molecule. [7]