Figure 5.

Scanning electron micrographs of ileum and colon epithelial cells in vivo and in vitro. Microvilli are present on a few epithelial cells at the top of an ileum villus of a 3 days old piglet. Cultured ileum epithelial cells are covered with microvilli. In the colon of a 3 days old piglet, almost all the epithelial cells were covered with short microvilli. A large number of microvilli were present on the colon epithelial cells at 3 days post seeding.