摘要:
The present invention provides simple, rapid methods and procedures for analyzing cells, hereunder quantitative and qualitative assessment of cells, such as viability. The present invention relates to the use of various optionally substituted reporter compounds particularly detectable upon their reaction with thiol-containing species present in higher concentrations in intact (e.g., living) cells than in non-intact (e.g., dead, stressed and apoptotic) cells. The present invention also relates to the use of various optionally substituted reporter compounds particularly detectable upon their reaction with species present in intact and/or non-intact cells. Moreover, the present invention relates to the use of measuring techniques and/or instruments coupled with the use of various optionally substituted reporter compounds. The invention further relates to compositions used in methods for analyzing cells, such as a composition comprising N-(7-dimethylamino-4-methyl-3-coumarinyl)-maleimide (DACM).
摘要:
The present invention relates to a method for the assessment of quantity and quality parameters of biological particles in a liquid analyte material. The method comprises applying a volume of a liquid sample to an exposing domain from which exposing domain electromagnetic signals from the sample in the domain can pass to the exterior, and exposing, onto an array of active detection elements such as CCD-elements, a spatial representation of electromagnetic signals having passed from the domain, the representation being detectable as an intensity by individual active detection elements, under conditions permitting processing of the intensities detected by the array of detection elements during the exposure in such a manner that representation of electromagnetic signals from the biological particles are identified as distinct from representations of electromagnetic signals from background signals. The exposing domain has an average interior thickness of between 20 μm and 200 μm.
摘要:
The present invention relates to a method for the assessment of quantity and quality parameters of biological particles in a liquid analyte material. The method comprises applying a volume of a liquid sample to an exposing domain from which exposing domain electromagnetic signals from the sample in the domain can pass to the exterior, and exposing, onto an array of active detection elements such as CCD-elements, a spatial representation of electromagnetic signals having passed from the domain, the representation being detectable as an intensity by individual active detection elements, under conditions permitting processing of the intensities detected by the array of detection elements during the exposure in such a manner that representation of electromagnetic signals from the biological particles are identified as distinct from representations of electromagnetic signals from background signals. The size of the volume of the liquid sample is sufficiently large to permit the assessment of the quantity and quality parameters to fullfil a predetermined requirement to the statistical quality of the assessment based on substantially one exposure.
摘要:
According to an embodiment of the invention, an apparatus to detect fluorescence from a sample is disclosed. The apparatus comprises a sample plane onto which the sample is arranged, an excitation light unit including at least a light source to illuminate the sample, and a detection unit comprising at least a detector having at least 100,000 active detection elements to detect a fluorescence signal from the sample.
摘要:
The invention relates the movement of at least one movable means of an interferometer relative to the body of the interferometer. The system according to the invention, comprises at least two interferometer actuators, that can be operated individually, so that the at least two actuators are capable of moving the at least one movable means of the interferometer. When activating at least one of the at least two interferometer actuators the at least one movable means of the interferometer is moved with a minimum need for correcting for e.g. tilt. In a preferred configuration the system and the method according to the invention comprises three interferometer actuators that can be operated individually.