Fig. 1

Prokaryotic expression, purification and transmission electron micrographic images of recombinant protein. a A subunit of VP6–ferritin (PDB); detection of recombinant protein by Western blotting with anti-VP6 antibodies. b SDS-PAGE analysis of the purified and digested recombinant protein. c TEM images of negatively stained rFerritin (left) and rVP6–ferritin (right)