Abstract:
The present invention relates to flow-through membranes suitable for the immobilization of biomolecules, methods for the preparation of such membranes and the use of such membranes for the immobilization of biomolecules and subsequent detection of immobilized biomolecules. The invention concerns a flow-through membrane for the immobilization of biomolecules on spots on said membrane, comprising polymeric material and an internal support, wherein said membrane has pores and wherein the spots of the membrane are separated by said internal support.
Abstract:
The invention provides systems and methods for maintaining and allowing a cell from a mixed population of uncultivated cells to be maintained, proliferate and grow, comprising encapsulating in a microenvironment at least a single cell from the population; placing the encapsulated cell in a growth column; and incubating the encapsulated cell in the growth column under conditions allowing the encapsulated cell to survive and be maintained, thereby isolating and maintaining the cell. The invention also provides systems and methods for identifying a biomolecule of interest from a population of cells, comprising: encapsulating at least one cell from a population in a microenvironment; placing the microenvironment comprising at least one cell in a growth column; incubating the microenvironment in the growth column under conditions allowing the encapsulated cell to survive and be maintained, thereby isolating and maintaining the cell; isolating said cell comprising the and identifying a biomolecule interest from said encapsulated cell.
Abstract:
A class of designs is provided for a permeable support where the design principle includes a permeable support layer, such as a membrane, bonded midway between two arrays of wells or multiwell plates, attached at their bottom portions, forming a double-sided multiwell plate. Thus, opposite facing wells on either side of the permeable support layer are accessible by inversion of the double-sided multiwell plate. Well fluid is held in place in the novel multiwell plate by capillary forces in the case of aligned upper and lower well arrays or by surface tension on patterned well regions on a permeable membrane layer. No additional components are necessary to form compartments for fluid retention. These new plate designs allow the surface area of the permeable support layer to be maximized, eliminate potential wicking and cross contamination issues that may arise from multiple component sidewalls, and take advantage of the small well diameters to retain fluid by utilizing the effects of surface tension or capillary forces.
Abstract:
A system for thermal cycling a plurality of samples. The system includes a case having a fluid-tight cavity defining an interior volume. A microfluidic array is disposed in the interior volume, the array including a sheet of material having a pair of opposed surfaces, a thickness, and a plurality of through-holes running through the thickness between the surfaces. A thermal cycler having at least one thermally controlled surface is adapted to thermally contact the case.
Abstract:
A device for collecting and preserving nucleic acids in a sample, the device comprising: a) a support; b) one or more than one sample zone in the support for loading the sample onto the device; and c) a composition comprising i) one or more than one absorbent, and ii) one or more than one stabilizer; where the one or more than one sample zone on the support comprises a recess or space within the support extending from the top surface toward, but not through, the bottom surface, or comprises a space within the support and the composition is retained within the sample zone. A method for collecting and preserving nucleic acids in a sample, the method comprising a) providing a device for collecting and preserving nucleic acids in a sample according to the present invention; b) providing a sample potentially comprising one or more than one nucleic acid; and c) applying part or all of the sample to one or more than one of the sample zones on the device. A method of detecting and quantifying nucleic acids in a sample, the method comprising a) collecting and preserving nucleic acids in the sample according to a method of the present invention; b) removing the absorbent with sample from the sample zones of the device; and c) detecting, or detecting and quantifying the nucleic acids.
Abstract:
A microplate having a main body portion. The main body portion having a first surface and an opposing second surface, and a groove disposed about the first surface of the main body portion. The groove separates the main body portion into an inboard section and an outboard section. A plurality of wells are formed in the inboard section of the first surface and each of the plurality of wells being sized to receive an assay therein.
Abstract:
Es wird eine Aufnahmeeinheit für biologische Objekte bereitgestellt, welche ein plattenförmiges Element (1) mit einer Vielzahl von Öffnungen (2) umfasst. Diese Öffnungen sind insbesondere entsprechend den Öffnungen einer Mikrotiter- oder Multiwellplatte angeordnet. Hierdurch ist ein einfaches Einbringen von biologischen Objekten beispielsweise mittels Laser-Catapulting in das Aufnahmeelement und von dort in die Mikrotiter- oder Multiwellplatte möglich. Zudem wird eine Vorrichtung zur Wärmebehandlung von in der Aufnahmeeinheit befindlichen biologischen Objekten bereitgestellt.
Abstract:
A device for transporting liquids and supporting crystal growth comprises a hollow space (20) in a body (1) with a first side. The hollow space comprises at least a first orifice (9) and is being adapted for generating a directed capillary ascension effect towards the at least first orifice (9).
Abstract:
A plate (100) for use in mixing and testing materials in the pharmaceutical industry is formed by a method in which an array of sample cells (110) contain a U -shaped structure having two vertical apertures (121, 123) connected by a horizontal passage (126) in a bottom sheet; reagents are drawn in to the vertical passages by capillary action and react in the horizontal passage. An optional version of the invention includes a relatively large reservoir (680) for containing rinsing fluids.
Abstract:
The invention relates to a container for a liquid sample, which container (1) comprises an elongate casing and into which container a liquid sample may be taken and in which it may be examined. The container (1) comprises an open lower end and an open upper end and the sample in the container may be examined in the longitudinal direction of the container, especially from above.