Electrophoretic analysis of PrPres of vCJD, BSE, sCJD, iCJD, and
scrapie transmitted to C57BL/6 mice. Western blot detection of PrPres
purified from the brains of C57BL/6 mice at the terminal stage of the
disease (except for the control) after inoculation of normal mouse
brain homogenate (lane 1); French case of iCJD linked to the
administration of growth hormone (lane 2); French case of sCJD (lane
3); first of the three French vCJD cases (lane 4); cattle-BSE (lane 5);
and natural sheep scrapie (French Romanov flock) (lane 6). The mouse
brain equivalent loads were 0.6 mg (lanes 4 and 6), 1.2 mg (lanes 3 and
5), and 12 mg (lanes 1 and 2).