Figure 2From: Recombinant HPV16 E7 assembled into particles induces an immune response and specific tumour protection administered without adjuvant in an animal modelElectron micrographs. Electron micrographs of the negatively stained E7 preparation samples. Panel A. E7 particles of different shape and size. Panel B. Spheroidal microaggregates of compact aspect. Panel C. Highly structured E7-particles of different size are indicated by arrows. The magnitude scale bars are indicated.Back to article page