Microbiome Research Mock Microbial Communities Mock microbial communities comprising genomic DNA or whole cells. Spike-In Standards Microbiome controls with unique, easily identifiable genetic tags. Site-specific Standards Mock microbial communities comprising bacterial species observed in normal and atypical microbial communities found on or within the human body. Virome Standards Mock microbial communities representing genetically diverse and clinically relevant viruses. Human Microbiome Project Microbial strains isolated from the human microbiome. Anaerobic Bacteria There are numerous types of anaerobic bacteria with various atmospheric and nutritional requirements from clinical gut and wound isolates to environmental extremophiles.