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manual social classes
The Registrar General’s social classification of the population is based on occupational status. The manual social classes are made up of people whose work is manual, e.g. building or plumbing work, and are sometimes referred to as blue-collar workers.
mesolimbic/mesotelencephalic dopamine system/ pathway
messenger RNA (mRNA)
A group of sequential metabolic reactions.
The rate at which energy is used by the body. It is usually expressed in kilocalories per hour.
The term refers to when a cancerous tumour spreads out to establish satellite tumours elsewhere.
A substance that is prescribed for heroin addicts. It is believed to have a less-addictive potency than heroin, though in this regard its use is controversial.