Previously we presented Swarm v1. a novel and open source amplicon clustering program that produced fine-scale molecular operational taxonomic units (OTUs). free of arbitrary global clustering thresholds and input-order dependency. Swarm v1 worked with an initial phase that used iterative single-linkage with a local clustering threshold (d). https://www.countryscenesaddleryandpetsuppliers.shop/product-category/western-pad/