part_of part of part of multicellular organism lateral line system posterior lateral line primordium ZFA:0001157 UBERON:2001157 This class was sourced from an external ontology (teleost_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon A migrating group of cells originating from the posterior lateral line placode. The primordium deposits seven to nine neuromasts and interneuromasts between them during its posterior migration to the tail. Gompel et al, 2001. posterior lateral line primordia posterior lateral line system zebrafish component