biofilm formation single-species biofilm formation https://github.com/geneontology/go-ontology/issues/18814 bfp-dependent aggregation bundle-forming pili-dependent aggregation GO:0052000 A process in which planktonically growing microorganisms of the same species grow at a liquid-air interface or on a solid substrate under the flow of a liquid and produce extracellular polymers that facilitate matrix formation, resulting in a change in the organisms' growth rate and gene transcription. GO:0044010 bundle-forming fimbriae-dependent aggregation type IV pili-dependent aggregation auto-aggregation biological_process tfp-dependent aggregation intraspecies interaction between organisms