| mammalia | <zoology> The highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother. Mammalia are divided into three subclasses; I. Placentalia. This subclass embraces all the higher orders, including man. In these the foetus is attached to the uterus by a placenta. II. Marsupialia. In these no placenta is formed, and the young, which are born at an early state of development, are carried for a time attached to the teats, and usually protected by a marsupial pouch. The opossum, kangaroo, wombat, and koala are examples. III. Monotremata. In this group, which includes the genera Echidna and Ornithorhynchus, the female lays large eggs resembling those of a bird or lizard, and the young, which are hatched like those of birds, are nourished by a watery secretion from the imperfectly developed mammae. Origin: NL, from L. Mammalis. See Mammal. (20 Mar 1998) |
|---|---|
| mammalian expression vector | <molecular biology> A vector that will produce large amounts of eukaryotic protein taxonomy notwithstanding, and not necessarily a protein from a mammal. (20 Mar 1998) |
| mammaliferous | <geology> Containing mammalian remains; said of certain strata. Origin: Mammal. Source: Websters Dictionary (01 Mar 1998) |
| mammals | Warm-blooded vertebrate animals belonging to the class mammalia, including all that possess hair and suckle their young. It includes three major groups: placentals and marsupials, which are vivparous, and monotremes, which are oviparous. (12 Dec 1998) |
| mammamodulin | <protein> Protein (52-55 kD) expressed by hormone independent mammary tumour cells. Affects morphology, motility, growth and hormone receptor expression. (18 Nov 1997) |
| mammaplasty | Surgical reconstruction of the breast. (27 Sep 1997) |
| mammary | <anatomy> Pertaining to the mamma or breast. Origin: L. Mammarius (18 Nov 1997) |
| mammary arteries | Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles and mammary gland. (12 Dec 1998) |
| mammary branches | See: lateral mammary branches, medial mammary branches. (05 Mar 2000) |
| mammary calculus | A concretion in one of the ducts of the breast. (05 Mar 2000) |
| mammary cancer virus of mice | Member of the retrovirus subfamily Oncornavirinae, antigenically distinct from the murine leukaemia-sarcoma complex, that is associated with adenocarcinomatous tumours of the mammary gland, commonly latent in wild and laboratory mice and causing cancer only in genetically susceptible strains under certain hormonal influences. Synonym: Bittner agent, Bittner virus, Bittner's milk factor, mammary cancer virus of mice, milk factor, mouse mammary tumour virus. (05 Mar 2000) |
| mammary derived growth inhibitor | Fatty acid binding protein that inhibits proliferation of mammary carcinoma cells. (18 Nov 1997) |
| mammary duct ectasia | A noncancerous breast disease most often found in women during menopause. The ducts in or beneath the nipple become clogged with cellular and fatty debris. The duct may have gray to greenish discharge, a lump you can feel and can become inflamed, causing pain. (09 Oct 1997) |
| mammary ducts | The ducts, numbering 15 or 20, which drain the lobes of the mammary gland; they open at the nipple. Synonym: ductus lactiferi, canalicular ducts, galactophore, galactophorous canals, galactophorous ducts, mamillary ducts, mammary ducts, milk ducts, tubuli galactophori, tubuli lactiferi. (05 Mar 2000) |
| mammary dysplasia | An obsolete term for fibrocystic condition of the breast. (05 Mar 2000) |