<P> BSE is due to an infection by a misfolded protein , known as a prion . Cattle are believed to have been infected by being feed meat - and - bone meal ( MBM ) that contained the remains of other cattle who spontaneously developed the disease or scrapie - infected sheep products . The outbreak increased throughout the United Kingdom due to the practice of feeding meat - and - bone meal to young calves of dairy cows . Cases are suspected based on symptoms and confirmed by examination of the brain . Cases are classified as classic or atypical , with the latter divided into H - and L types . </P>
<P> BSE is due to an infection by a misfolded protein , known as a prion . Cattle are believed to have been infected by being feed meat - and - bone meal ( MBM ) that contained the remains of other cattle who spontaneously developed the disease or scrapie - infected sheep products . The outbreak increased throughout the United Kingdom due to the practice of feeding meat - and - bone meal to young calves of dairy cows . Cases are suspected based on symptoms and confirmed by examination of the brain . Cases are classified as classic or atypical , with the latter divided into H - and L types . </P>
where did the mad cow disease come from
where did the mad cow disease come from
an infection by a misfolded protein , known as a prion
an infection by a misfolded protein , known as a prion