Figure 1

SEM analyses of the Caco-2 monolayer (A, B) and the Caco-2/M cell co-culture (C, D). The most prominent features on the Caco-2 cell surfaces are the microvilli that cover the surface forming the typical intestinal brush border (A, B). In contrast, M cells lack in microvilli (C). Arrowheads indicate sparse truncated microvillar structures on the edge of the cell membrane of a M cell (D).

© De Gruyter