Figure 6

Parasitophorous vacuole formation. (A) Scanning electron micrograph showing evidence of parasitophorous vacuole formation by Cryptosporidium in a biofilm environment. (B) Magnified region depicted in A. (C) Parasitophorous vacuole formation by Cryptosporidium in HCT8 cell culture, included for comparison. (D) Magnified area depicted in C. Arrows indicate radial fold and arrowheads indicate dense band area. Scale bars = A: 1.5 μm; B & D: 1 μm; C: 2μm.