Symbiosis with Dinoflagellates Alters Cnidarian Cell-Cycle Gene Expression

Figure 9

Transverse section of an aposymbiotic Aiptasia column (a) and a symbiotic Aiptasia column (b). Sections are stained with Hoechst 33342 (blue) and EdU (green), visualized under a fluorescence microscope. Blue cells indicate all noncycling Aiptasia cells present, whereas green cells indicate the proliferating (cycling) Aiptasia cells, through the incorporation of EdU into cells progressing through their cell cycle during DNA synthesis (S phase).

(a)

(b)