A non-membranous macromolecular complex containing proteins and translationally silenced mRNAs. RNA granules contain proteins that control the localization, stability, and translation of their RNA cargo. Different types of RNA granules (RGs) exist, depending on the cell type and cellular conditions. [ http://www.ncbi.nlm.nih.gov/pubmed/20368989 http://www.ncbi.nlm.nih.gov/pubmed/16520386 GOC:go_curators GOC:sp http://www.ncbi.nlm.nih.gov/pubmed/21436445 ]