“In BioNumbers we aim to enable you to find in one minute any useful molecular biology number that can be important for your research. BioNumbers currently attracts >3000 visitors a month from over 50 countries.  To cite BioNumbers please refer to: Milo et al. Nucl. Acids Res. (2010) 38 (suppl 1): D750-D753. When using a specific entry from the database it is recommended that you also specify the BioNumbers 6 digit ID, e.g. “BNID 100986, Milo et al 2010”.  The BioNumbers database started in 2007 by Ron Milo, Paul Jorgensen and Mike Springer while sharing a bay at the Systems Biology department in Harvard. It was inspired by a table comparing values of key properties in bacteria, yeast and a mammalian cell line in Uri Alon’s book – “Introduction to systems biology” and by the CyberCell project. BioNumbers is coordinated and developed at the Milo lab in the Weizmann Institute of Science in Israel. Uri Moran is the hero that enters the vast majority of entries and curates the database. Feel free to write us a note at [email protected].”