Figure 2

Immuno-gold electron micrographs showing the subcellular localization of RSV RNP particles in viruliferous SBPH ovum. A, B, C: The colloidal gold nanoparticles (RSV RNPs) distribute diffusely throughout the eggshell surface. Panel C is an enlargement of the boxed area of panel B. D: RSV RNPs in the interior of ovum. The virus RNPs are indicated by arrows. Scale bars: 0.2 μm (A, C) and 0.5 μm (B, D).