WordNet records no synonym and no antonym for target cell. It is the only member of each of its synsets, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
any cell that has a specific receptor for an antigen or antibody or hormone or drug, or is the focus of contact by a virus or phagocyte or nerve fiber etc.
an abnormal red blood cell with the appearance of a dark ring surrounding a dark center; associated with anemia
Synonyms, antonyms and the broader and narrower relations for target cell come from Princeton University’s WordNet. Full sources and licences.