(1) cill d’oileáin pancreatic na muice guine; SYN: gáma-chealla briseán.medullary carcinoma an thyroid. (2) cill thyroid follicular bhabhta nó fearsaid-secreting calcitonin; go ultrastructurally tá go leor gráinníní neuroendocrine 60-550 nm; is fearr a aithníodh go himdhíon-histochemical le hantasubstaintí go calcitonin. SYN: cealla éadroma de chealla thyroid, parafollicular.