obsolete detection of host https://github.com/geneontology/go-ontology/issues/25087 true GO:0044405 recognition of host The reason for obsoletion is that the term is not a specific process and there are no annotations. biological_process OBSOLETE. The set of specific processes that allow an organism to detect the presence of its host via physical or chemical signals. The host is defined as the larger of the organisms involved in a symbiotic interaction.