Cytometry, Part A embraces the study of the cytome, covering all aspects of molecular analysis of cellular systems in the following areas: cytomics (studies linking the genome and proteome to cell regulation and function), flow cytometry, image cytometry, molecular array technologies, as well as other cell-based spectroscopic analyses and associated bioinformatics/computational methodologies. The research featured in the journal encompasses not only the development of the techniques and reagents needed to measure cell features and cellular constituents, but also investigations that primarily employ these techniques for characterization in order to provide an understanding of function and regulation in the context of the cell, organ, and organism. Cytometry, Part A publishes original research articles, in-depth reviews, rapid communications of new, novel "hot" topics, and technical innovation articles.