Looking for an ampoule of algae? Need a soupçon of slime molds for a study on cell locomotion? Flip through this electronic Rolodex of more than 450 culture collections that are willing to share microbes, viruses, fungi, plant and animal cell lines, and other samples. Hosted by the World Data Centre for Microorganisms in Mishima, Japan, the directory summarizes each site's holdings and conditions for use—for example, some provide samples for free, while others require payment or a culture in trade.