Trophozoite growth profile and differential gene transcription.

A: Average density of attached Giardia duodenalis trophozoites during in vitro growth. Error bars represent ± 1 SEM. B: Heat map displaying transcriptional abundance of all transcribed genes at successive growth phases. Light and dark blue indicate high and low transcriptional abundance respectively. C: Differentially transcribed genes at log, stationary, and declining phases of in vitro growth. Numbers represent up-regulated genes relative to other phase(s). *Five and three genes were significantly up- and down-regulated respectively at successive phases.