Figure 4. Pathogenic and apathogenic strains of IBV induce zippered ER, spherules and DMVs.
TOCs were mock infected or infected with (a) H120, D1466, 4/91 or Italy02, (b), Beau-R or (c) M41. After 24 hours, cells were chemically fixed. DMVs are indicated by a star, zippered ER with black arrowheads and spherules with black brackets.