alveolate apicomplexan http://purl.bioontology.org/ontology/MESH/D016782 http://purl.bioontology.org/ontology/SNOMEDCT/106604000 http://purl.obolibrary.org/obo/NCBITaxon_5794 https://en.wikipedia.org/wiki/Apicomplexa https://eol.org/pages/4656 https://www.wikidata.org/wiki/Q193030 A phylum of unicellular parasitic eukaryotes characterized by the presence of complex apical organelles generally consisting of a conoid that aids in penetrating host cells, rhoptries that possibly secrete a proteolytic enzyme, and subpellicular microtubules that may be related to motility. apicomplexans Apicomplexa