life-threatening - sth very serious, which could kill you, mouth ulcer - a small blister in a mouth that can be very painful, but is not serious, alternative remedies - ways of curing illnesses that are not traditional medicine, e.g. herba medicine, under the weather - not feeling very well, cancer - a serious illness in which malignant cells form in the body and kill normal body cells, infection - an illness that is caused by bacteria or a virus, heart rate - the speed at which your heart beats, surgery - the medical treatment of an illness or injury that involves an operation, pulse - the number of times your heart beats in a minute, timour - a group of cells that are growing in a place where they should not be, miracle cures - successful treatments for illnesses that were thought to be impossible to cure,

english file 2A upper

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