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Time-dependent effect of Blastocystis ST-7 and ST-4 on the transepithelial resistance (TER) of Caco-2 cell monolayers. Confluent monolayers of Caco-2 cells were coincubated with ST-7 and ST-4 for the indicated times. TER was then measured as described in Section 2. ST-7 treated monolayers, compared to ST-4 and negative control, showed a significant drop in TER after 3, 6, 12, and 24 h (P value < 0.01). Values are means ± standard error (error bars) (n = 6).
