Institut de Genetique Moleculaire de Montpellier, CNRS UMR 5535 1 article published in JoVE Biology Visualization of G3BP Stress Granules Dynamics in Live Primary Cells Sophie Martin1, Jamal Tazi1 1Institut de Génétique Moléculaire de Montpellier, CNRS UMR 5535 Stress granules (SGs) are cytoplasmic RNA granules containing stalled ribonucleoprotein particles (RNPs), and important in cellular response to various stresses. Dynamics of SGs can be followed in live cells by visualizing the localization of a tagged component of SGs in transfected primary cells after stress.