| brown fat | A thermogenic type of adipose tissue containing a dark pigment, and arising during embryonic life in certain specific areas in many mammals, including man. It is prominent in the newborn of all species in which it occurs and remains a distinct and conspicuous tissue in the adults of certain species, especially those that hibernate. It is also called brown adipose tissue. (12 Dec 1998) |
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| brown fat cell | <pathology> Brown fat is specialised for heat production and the adipocytes have many mitochondria in which an inner membrane protein can act as an uncoupler of oxidative phosphorylation allowing rapid thermogenesis. (18 Nov 1997) |
| Brown, Harold | <person> U.S. Ophthalmologist, *1898. See: Brown's syndrome. (05 Mar 2000) |
| brown induration of the lung | A condition characterised by firmness of the lungs, and a brown colour associated with haemosiderin-pigmented macrophages in alveoli, consequent upon long-continued congestion due to heart disease. Synonym: pigment induration of the lung. (05 Mar 2000) |
| Brown, James | <person> U.S. Plastic surgeon, 1899-1971. See: Blair-Brown graft, Brown-Adson forceps. (05 Mar 2000) |
| Brown, James H | <person> U.S. Microbiologist, *1884. See: Brown-Brenn stain. (05 Mar 2000) |
| brown layer | An exceedingly delicate layer of loose, pigmented connective tissue on the inner surface of the sclera, connecting it with the choroid. Synonym: lamina fusca sclerae, brown layer, membrana fusca. (05 Mar 2000) |
| brown lung | Obstructive airway disease with asthma produced by exposure to cotton dust, flax or hemp. See: byssinosis. (05 Mar 2000) |
| brown oedema | Oedema of the lungs associated with chronic passive congestion. (05 Mar 2000) |
| brown pellicle | A thin film (about 1 um), derived mainly from salivary glycoproteins, which forms over the surface of a cleansed tooth crown when it is exposed to the saliva. Synonym: acquired cuticle, acquired enamel cuticle, brown pellicle, posteruption cuticle. (05 Mar 2000) |
| Brown, Robert | <person> English botanist, 1773-1858. See: brownian motion, brownian movement, brownian-Zsigmondy movement. (05 Mar 2000) |
| Brown-Sequard, Charles | <person> French physiologist and neurologist, 1817-1894. See: Brown-Sequard's paralysis, Brown-Sequard's syndrome. (05 Mar 2000) |
| Brown-Sequard's paralysis | <neurology, syndrome> A type of spinal cord lesion that is characterised by hemiparaplegia and hyperesthesia, but with loss of motor function on the same side as the lesion and hemianaesthesia on the opposite side. (27 Sep 1997) |
| Brown-Sequard's syndrome | <neurology, syndrome> A type of spinal cord lesion that is characterised by hemiparaplegia and hyperesthesia, but with loss of motor function on the same side as the lesion and hemianaesthesia on the opposite side. (27 Sep 1997) |
| brown-sequard syndrome | <syndrome> A syndrome due to damage of one half of the spinal cord, resulting in ipsilateral paralysis below the level of the lesion and loss of discriminatory and joint sensation, and contralateral loss of pain and temperature sensation. Brown-sequard was a french physiologist, 1817-1894. The syndrome is also called brown-sequard disease and brown-sequard paralysis but this latter should not be confused with a flaccid paralysis seen in disorders of the urinary tract called by the same name. (12 Dec 1998) |