in vitro assay

in vitro mammalian cell gene mutation test

sister chromatid exchange assay | sister chromatid exchange assay in vitro | sister chromatid exchange test | SCE test [Abbr.]

laboratory-grown beef burger [ laboratory-grown hamburger | lab-grown hamburger | cultured beef burger | cultured beef patty | in vitro beef burger | test-tube beef burger | stem-cell beef burger | Frankenburger | Frankenstein burger | Frankenstein's burger | cruelty-free hamburger | synthetic hamburger ]

48-hour in vitro test [ fourty eight-hour in vitro test ]

Definition: The essential feature is recurrent obsessional thoughts or compulsive acts. Obsessional thoughts are ideas, images, or impulses that enter the patient's mind again and again in a stereotyped form. They are almost invariably distressing and the patient often tries, unsuccessfully, to resist them. They are, however, recognized as his or her own thoughts, even though they are involuntary and often repugnant. Compulsive acts or rituals are stereotyped behaviours that are repeated again and again. They are not inherently enjoyable, nor do they result in the completion of inherently useful tasks. Their function is to prevent some o ...[+++]bjectively unlikely event, often involving harm to or caused by the patient, which he or she fears might otherwise occur. Usually, this behaviour is recognized by the patient as pointless or ineffectual and repeated attempts are made to resist. Anxiety is almost invariably present. If compulsive acts are resisted the anxiety gets worse. | anankastic neurosis obsessive-compulsive neurosis

Directive 98/79/EC on in vitro diagnostic medical devices [ Directive 98/79/EC of the European Parliament and of the Council of 27 October 1998 on in vitro diagnostic medical devices | In-Vitro Diagnostic Medical Devices directive ]

in vitro fertilization | FIV

Complications of attempted introduction of fertilized ovum following in vitro fertilization

In vitro fertilization

The JRC, meanwhile, is focusing on the development and harmonization of methods for the characterization and toxicity testing of manufactured nanomaterials (e.g. particle size measurements, in vitro testing of a representative set of nanomaterials on critical cell lines); related studies on reference materials and dosimetry; studies on the applicability of computational methods for assessing nanoparticle properties, including toxicity; and database development.

In vivo studies may still be required in some exceptional cases for substances manufactured or imported in quantities of 10 tonnes or more, e.g. when the substance tested falls outside the applicability domain of the in vitro test methods or when no conclusive results can be obtained from a comprehensive set of in vitro tests.

A conclusion may be drawn on the basis of one in vitro test, if the result allows an immediate reliable decision on classification or non-classification, or from a combination of two in vitro tests, one for skin irritation and one for skin corrosion.

In vivo studies may still be required in some cases for substances manufactured or imported in quantities of 10 tonnes or more, e.g. when the substance tested falls outside the applicability domain of the test methods or when no conclusive results can be obtained from a comprehensive set of in vitro tests.