摘要:
An apparatus and process for the micro juxtaposition is set forth where a selectively activatable surface is maintained spaced apart from the tissue sample and juxtaposed to the tissue sample by activation. In the typical case, activation occurs by laser radiation with the material of the activatable surface thermally expanding and bringing about the desired micro juxtaposition. The disclosed micro juxtapositioning can cause locally and microscopically pressure on tissue sample, insertion to the tissue sample, or contact of an activated or prepared surface to the tissue sample.
摘要:
The present invention clarifies and contrasts stain intact biological tissue samples for microscopic analysis. A biological specimen is depigmented and then contacted with a fluorescent dye, wherein the dye stains the specimen nonspecifically. The depigmented, non-specifically stained specimen is equilibrated in a clearing solution, wherein the refractive index of the clearing solution approximates that of the specimen, thereby preparing the biological specimen for visual analysis.
摘要:
The present invention is directed to a fixative composition, the use of the fixative composition in preparing cytological or histological specimens, and a method of preparing particulate matter, such as cytology, hematology and microbiology specimens, for examination by collecting the particulate matter in a uniform layer, preferably a monolayer, and fixing the particles in a composition according to the present invention. The cytological, hematological, microbiological and histological fixative composition of the present invention contains an aldehyde crosslinker, a polyol and a detergent. The method of the present invention for preserving the particulate or histological specimen uses the fixative composition containing an aldehyde crosslinker, a polyol and a detergent.
摘要:
A method of simultaneously staining for various opportunistic pathogens stains tissues sections with Ziehl-Neelsen carbo-fuchsin, Schiff reagent, and a mixture of metanil yellow and stock fast green solution. In particular, the method is useful for staining tissue sections suspected of containing opportunistic pathogens commonly found in AIDS patients, i.e., acid fast mycobacteria, fungus, and Pneumocystis carinii.
摘要:
An apparatus and method for producing tissue slides is disclosed. The apparatus includes a holding assembly for manipulating the sample block, a blade assembly for preparing a thin section from the sample block, and a transfer roller mechanism for transferring the thin section to a receiving medium. The apparatus further includes a controller that may track the sample block and thin section. The method includes the steps of first locating a sample embedded within a support medium, which may be paraffin or a similar medium. Next, the embedded sample is oriented in such a way that its working surface is presented. This orientation may entail determining the orientation of the embedded sample with respect to the blade that will produce the largest cross-sectional area. Next, a slice of the sample from said embedded sample is removed and subsequently transferred to a suitable receiving medium, which may include a microscope slide.
摘要:
A method for preparing an organic sample for cutting and subsequent examination, involving immersing the sample in a composition containing: an infiltrating substance; an embedding substance, which can be the same or different from the infiltrating substance; and a stain that chemically associates with the organic sample, wherein the stain exhibits different detectable properties when associated and not associated with the sample.
摘要:
A novel aurophosphate stain for staining a slide-mounted brain tissue slice or section to label myelin therein, the method of staining, and the method of making the stain. The stain is potassium aurophosphate or sodium aurophosphate produced as the reaction product of an aurochloride and a dibasic potassium or sodium phosphate. Slide-mounted brain tissue slices are stained by immersing the slice in a warn solution of the aurophosphate. The stained slice may be intensified by immersing the slide-mounted stained tissue slice in a potassium tetrachloroaureate solution. The stained or intensified slice can be fixed by immersion in a sodium thiosulfate solution. Large bundles of stained myelin appear deep red-brown, while smaller bundles and individual fibers appear black.
摘要:
A novel encoding system and methods for determining the location and/or identity of a particular item or component of interest is provided. In particular, the present invention utilizes a “barcode” comprising one or more sizes of semiconductor nanocrystals (quantum dots) having characteristic spectral emissions, to either “track” the location of a particular item of interest or to identify a particular item of interest. The semiconductor nanocrystals used in the inventive “barcoding” scheme can be tuned to a desired wavelength to produce a characteristic spectral emission in narrow spectral widths, and with a symmetric, nearly Gaussian line shape, by changing the composition and size of the quantum dot. Additionally, the intensity of the emission at a particular characteristic wavelength can also be varied, thus enabling the use of binary or higher order encoding schemes. The information encoded by the quantum dot can be spectroscopically decoded, thus providing the location and/or identity of the particular item or component of interest. In particular, a single primary light source can be used to decode the inventive barcode. In particularly preferred embodiments, the present system and method is used in applications to security systems, to the tracking of consumer items such as jewelry, vehicles, or paper. In other particularly preferred embodiments, the present system and method is used in applications for biochemistry to track the location of biomolecules such as DNA sequences, combinatorial chemistry, and genomics for encoding and probe identifiers.
摘要:
A method and apparatus for specimen slide (710) preparation is disclosed. The method and apparatus of the present invention uses slide trays (700) that have receptacles for at least one specimen slide (710) and an associated reagent pack (720). The specimen slide (710) and reagent pack (720) includes respective identifiers (420, 411) that specify a particular slide preparation protocol that should be followed. The method reads the identifiers (420, 411) on the reagent pack and the slide to verify that the correct slide preparation protocol is being used.
摘要:
The invention relates to a mounting medium that can be used in the preparation of slides for investigation by microscopy techniques. More in particular the mounting medium comprises a solution, in at least one organic solvent selected from the group consisting of saturated hydrocarbons optionally mixed with one or more alcohols, of at least one (meth)acrylate resin based on one or more monomers having formula I: wherein R is hydrogen or a methyl group and n has a value of 0-19. The mounting medium of the invention is particularly suited for use in histochemistry, immunochemistry and/or cytochemistry, i.e. to provide slides of samples of blood, cells tissue or other biological fluids or materials, including but not limited to samples/materials which have been stained to facilitate microscopic examination, e.g. for scientific and/or diagnostic purposes.