| density dependent inhibition of growth | <cell culture> The phenomenon exhibited by most normal (anchorage dependent) animal cells in culture that stop dividing once a critical cell density is reached. The critical density is considerably higher for most cells than the density at which a monolayer is formed, for this reason, most cell behaviourists prefer the term density dependent inhibition of growth as this avoids any confusion with contact inhibition of locomotion, a totally different phenomenon that is contact dependent. (12 Jan 1998) |
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| anchorage | <cell biology> Attachment, not necessarily adhesive in character, because the mechanism is not assumed the term ought to be more widely used. (18 Nov 1997) |
| anchorage dependence | <cell biology, cell culture> The necessity for attachment (and spreading) in order that a cell will grow and divide in culture. Loss of anchorage dependence seems to be associated with greater independence from external growth control and is probably one of the best correlates of tumourigenicity in vivo. Anchorage independence is usually detected by cloning cells in soft agarose, only anchorage independent cells will grow and divide (as they will in suspension). (18 Nov 1997) |
| reciprocal anchorage | Anchorage in which the movement of one or more teeth is balanced against the movement of one or more opposing teeth. (05 Mar 2000) |
| reinforced anchorage | Anchorage in which more than one type of resistance unit is utilised. Synonym: reinforced anchorage. (05 Mar 2000) |
| cervical anchorage | Anchorage in which the back of the neck is used for resistance by means of a cervical strap. (05 Mar 2000) |
| multiple anchorage | Anchorage in which more than one type of resistance unit is utilised. Synonym: reinforced anchorage. (05 Mar 2000) |
| simple anchorage | Anchorage in which the resistance to the movement of one or more teeth comes solely from resistance to tipping movement of the anchorage unit. (05 Mar 2000) |
| stationary anchorage | Anchorage in which the resistance to the movement of one or more teeth comes from the resistance to bodily movement of the anchorage unit; a questionable concept since the selected teeth remain only relatively stable. (05 Mar 2000) |
| intermaxillary anchorage | Anchorage in which the units in one jaw are used to effect tooth movement in the other jaw. (05 Mar 2000) |
| intramaxillary anchorage | Anchorage in which the resistance units are all situated within the same jaw. (05 Mar 2000) |
| intraoral anchorage | Anchorage in which the resistance units are all located within the oral cavity. (05 Mar 2000) |
| occipital anchorage | Anchorage in which the top and back of the head are used for resistance by means of a headgear. (05 Mar 2000) |
| extraoral anchorage | Anchorage in which the resistance unit is outside the oral cavity; e.g., cranial, occipital, or cervical anchorage. (05 Mar 2000) |
| aid to families with dependent children | Financial assistance provided by the government to indigent families with dependent children who meet certain requirements as defined by the social security act, title IV, in the u.s. (12 Dec 1998) |