PBCV-1 infected chlorella cells at 2 min PI.

A, C. TEM micrographs highlighting the hurdles that are associated with trafficking large viral DNA genomes to the nucleus. The large chloroplast is visible with an adjacent virus attached. The nucleus is located at the opposite side of the cell. B, D. High magnifications of panels A and C, respectively, showing the tightly packed thylakoid membrane (red arrowheads) and PBCV-1 virions attached adjacent to the thylakoid membrane stacks. Note that Panel D is rotated by 90o counter clockwise relative to Panel C. Scale bars: A, C: 500 nm; B, D: 100 nm.