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. 2018 Jul 4;8:226. doi: 10.3389/fcimb.2018.00226

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Copyright © 2018 Fonseca, Díaz-Godínez, Mora, Alemán, Uribe-Querol, Carrero and Rosales.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Entamoeba histolytica induce activation of ERK. Human neutrophils were stimulated with E. histolytica trophozoites for various periods of time, and then cell lysates were prepared. Neutrophils were (A) left untreated, or previously treated with (B) the MEK inhibitor UO126 (75 μM), or with (C) the Raf inhibitor GW5074 (100 μM). Proteins were resolved by SDS-PAGE, and then Western blotted for phosphorylated-ERK (p-ERK) (upper panel) or for total ERK (lower panel) to show equal loading of proteins. Plots on the right show densitometric analysis for the ratio of pERK/ERK. Data are mean ± SEM of three experiments.