The NCBI Taxonomy contains hundreds of thousands of organisms. We have extracted about 20,000 of these, which is a list that contains all organisms that have a common English name or that appeared in GeneBank. However, this list would still be too long to let users select from in a drop down selection. Therefore, below is a selection of the few most commonly used organisms in flow cytometry. If you have used a biological sample derived from an organism that is not listed, please follow the Add organism link and you will be able to add it from NCBI Taxonomy. Start typing either the Latin or the English name, the auto-complete will show suggestions after the first 3 characters. Once the organism is add and listed in the table below, it may be used to annotate biological sample source in your experiments.