Medical research

Health Check: What causes bloating and gassiness?

Your trousers fit when you put them on in the morning. But come mid-afternoon, they're uncomfortably tight – and you didn't even overdo it at lunchtime. Sound familiar?

Alzheimer's disease & dementia

Unraveling genetic risk factors for Alzheimer's disease

The strongest genetic risk factor for Alzheimer's disease may impair the brain's ability to convert its primary fuel source into usable energy, finds a study of female mice published in JNeurosci. The research suggests therapeutic ...

Neuroscience

Researchers discover the key to long-term memory

After a 30-year quest, a Brandeis professor has discovered the molecule that stores long-term memories—it's called calcium/calmodulin dependent protein kinase, or CaMKII for short. The results were published on September ...

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Chemical reaction

A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Different chemical reactions are used in combination in chemical synthesis in order to get a desired product. In biochemistry, series of chemical reactions catalyzed by enzymes form metabolic pathways, by which syntheses and decompositions ordinarily impossible in conditions within a cell are performed.

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