| Nat | native; natural |
|---|---|
| NCMC | natural cell-mediated cytotoxicity |
| ND | Doctor of Naturopathy; nasal deformity; natural death; Naval Dispensary; neonatal death; neoplastic ... |
| NK | Commission on [Anatomical] Nomenclature [Ger. Nomenklatur Kommission]; natural killer [cell]; neurok... |
| NKCA | natural killer cell activity |
D factor
| sex hormones | Hormones having oestrogenic (female sex hormones) or androgenic (male sex hormones) activity. (12 Dec 1998) |
|---|---|
| hypothalamic hormones | Hormones isolated from the hypothalamus which exercise control over other organs, primarily the pituitary gland. Well-known members include certain pituitary hormone-releasing hormones and pituitary hormone release inhibiting hormones. Vasopressin and oxytocin which are found in the posterior pituitary may also be secreted by the hypothalamus but are not grouped here (pituitary hormones, posterior). (12 Dec 1998) |
| steroid hormones | Those hormone's possessing the steroid ring system; e.g., androgens, oestrogens, adrenocortical hormone's. (05 Mar 2000) |
| neurohypophysial hormones | Hormones produced in the hypothalamus; e.g., oxytocin, vasopressin. (05 Mar 2000) |
| insect hormones | Hormones secreted by insects. They influence their growth and development. Also synthetic substances that act like insect hormones. (12 Dec 1998) |
| invertebrate hormones | Hormones produced by invertebrates, usually insects, mollusks, annelids, and helminths. (12 Dec 1998) |
| testicular hormones | Hormones produced in the testis. (12 Dec 1998) |
| thymus hormones | Humoral factors secreted by the thymus gland. They participate in the development of the lymphoid system and the maturation of the cellular immune response. (12 Dec 1998) |
| tissue hormones | Hormones synthesised by cells other than those in the endocrine system. Compare: endocrine hormones. (05 Mar 2000) |
| endocrine hormones | Hormones produced by the endocrine system. Compare: tissue hormones. (05 Mar 2000) |
| tropic hormones | Trophic hormones, those hormone's of the anterior lobe of the pituitary that affect the growth, nutrition, or function of other endocrine glands. (05 Mar 2000) |
| juvenile hormones | Compounds, either natural or synthetic, which block development of the growing insect. (12 Dec 1998) |
| accessory thyroid | An isolated mass, or one of several such masses, of thyroid tissue, sometimes present in the side of the neck, or just above the hyoid bone (suprahyoid accessory thyroid gland), or even as low as the arch of the aorta. Synonym: glandula thyroidea accessoria, accessory thyroid, prehyoid gland, suprahyoid gland, thyroidea accessoria, thyroidea ima, Wolfler's gland. (05 Mar 2000) |
| accessory thyroid gland | An isolated mass, or one of several such masses, of thyroid tissue, sometimes present in the side of the neck, or just above the hyoid bone (suprahyoid accessory thyroid gland), or even as low as the arch of the aorta. Synonym: glandula thyroidea accessoria, accessory thyroid, prehyoid gland, suprahyoid gland, thyroidea accessoria, thyroidea ima, Wolfler's gland. (05 Mar 2000) |
| anaplastic carcinoma of the thyroid | <oncology, tumour> An aggressive form and rare form of thyroid cancer that is one of the most rapidly growing and invasive types of thyroid cancer. It commonly occurs in people over 60 years of age and may cause obstruction of the trachea. The cause is unknown but exposure to radiation may be a factor. Thyroid function tests are usually normal. Hoarse voice, cough and coughing up blood are common symptoms. Examination may reveal nodules in the thyroid gland. Diagnosis is made via biopsy. Treatment is surgical with or without radiation therapy. (27 Sep 1997) |