parafollicular cells


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Related to parafollicular cells: parathyroid gland, calcitonin, Oxyphil cells

C cell

1. a cell of the pancreatic islets of the guinea pig;
See also: medullary carcinoma of thyroid. Synonym(s): gamma cell of pancreas
2. calcitonin-secreting round or spindle shaped follicular thyroid cell; ultrastructurally contains numerous 60-550 nm neuroendocrine granules; best identified immunohistochemically with antibodies to calcitonin. Synonym(s): light cells of thyroid, parafollicular cells

par·a·fol·lic·u·lar cells

(par'ă-fŏ-lik'yū-lăr selz)
Cells present between follicles or interspersed among follicular cells; they are rich in mitochondria and are believed to be the source of thyrocalcitonin.
References in periodicals archive ?
The general ultrastructural features of the WAD goat thyroid are similar to that of several mammals (Irie, 1960; Fujita, 1975) in terms of the presence of follicular cells, parafollicular cells and their cytoplasmic organelles with minor variations observed in goats.
Few light staining parafollicular cells were identified amongst follicular cells in the basal position and were rarely seen in the interfollicular position (Fig.
Calcitonin is a 24 amino acid polypeptide secreted by the parafollicular cells of the thyroid gland.
The parafollicular cells or C (clear) cells produce the calcium-regulating calcitonin hormone.
Lymphoid follicles showing parafollicular cells were markedly increased in number and arranged in an onion-skin appearance (Figure 12, B and C).
Five pairs of endoderm-lined pharyngeal pouches give rise to the middle ear cavity, auditory tube, tympanic membrane (from the first pair), palatine tonsils (from the second pair), thymus and lower parathyroid glands (from the third pair), upper parathyroid glands (from the fourth pair), and parafollicular cells of the thyroid gland The subsequent foregut extends to the bottom of the liver bud.