Molecular and Cellular BiologyMolecular and Cellular Biology (MCB) is dedicated to disseminating new findings and advancing new research that contributes to our knowledge of the molecular biology of eukaryotic cells. Examining both microbial and higher organisms, the journal showcases significant discoveries in cellular morphology and function, genome organization, regulation of genetic expression, morphogenesis, and somatic cell genetics. The journal also examines viral systems, publishing papers that emphasize their impact on the cell.