accessory substance

См. также в других словарях:

• accessory glands — (ARTHROPODA: Insecta) 1. A pair of glands opening primarily on the venter or the eighth or ninth abdominal segment of females that secrete an adhesive substance or material forming a cover or case (ootheca) for the eggs. 2. In males, secretion… …   Dictionary of invertebrate zoology

• Spinal root of accessory nerve — Infobox Nerve Name = PAGENAME Latin = radix spinalis nervi accessorii, pars spinalis nervi accessorii GraySubject = 206 GrayPage = 913 Caption = Caption2 = Innervates = BranchFrom = BranchTo = MeshName = MeshNumber = DorlandsPre = r 02… …   Wikipedia

• carrier — noun Date: 14th century 1. one that carries ; bearer, messenger 2. a. an individual or organization engaged in transporting passengers or goods for hire b. a transportation line carrying mail between post offices …   New Collegiate Dictionary

• cofactor — n. [L. cum, together; facere, to act] Any accessory substance (inorganic or organic) attached to an enzyme and necessary for its function; such as a metallic ion or a coenzyme …   Dictionary of invertebrate zoology

• V factor — an accessory substance required for the growth of certain species of Haemophilus, replaceable by nicotinamide adenine dinucleotide (NAD) or nicotinamide adenine dinucleotide phosphate (NADP) and present in red blood cells. Cf. X f …   Medical dictionary

• X factor — an accessory substance required for the aerobic growth of certain species of Haemophilus replaceable by hemin or other iron porphyrin compounds, and present in red blood cells. It is heat stable and is not destroyed by autoclaving. Cf. V f …   Medical dictionary

• cofactor — [kō′fak΄tər] n. 1. any one of two or more factors, the combined effects of which may cause a certain result or condition, esp. a disease: also written co factor 2. Biochem. an accessory substance, esp. a coenzyme, that must be present for a… …   English World dictionary

• Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… …   Medical dictionary

• gland — An organized aggregation of cells functioning as a secretory or excretory organ. SYN: glandula (1) [TA]. [L. glans, acorn] accessory g. a small mass of glandular structure, detached from but lying near another and larger g., to which it is… …   Medical dictionary

• Fiber — The parts of plants that cannot be digested, namely complex carbohydrates. Also known as bulk or roughage. Complex carbohydrates from plants are rich in starch and fiber. Examples of plants that provide complex carbohydrates (fiber) are fresh… …   Medical dictionary

• cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium