Figure 2.

Expression of M, rS, and rF proteins and characterization of chimeric infectious bronchitis-Newcastle disease (IB-ND) virus-like particles (VLPs). (i–iii) in (A) are individual western-blot results of M, rF, and rS proteins using anti-infectious bronchitis virus (IBV) or Newcastle disease virus (NDV) serum; (iv) is the SDS-PAGE result of VLPs. Protein molecular weight standards (Marker) and positions of M, rS, and rF are indicated. (B) Phosphotungstic acid negative stain of TEM images of (i) chimeric IB-ND VLPs and (ii) native IBV particles. The scale is marked on the lower right corner.