Abstract:
The high numerical aperture flow cytometer of the present invention includes a flow cell and a laser input. The laser input emits a beam of light that is oriented substantially orthoganilly to the flow of blood cells through the flow cell such that laser light impinges upon the blood cells as they pass through the flow cell. A portion of the beam from the laser input that impinges upon the blood cells in the flow cell is scattered at a substantially right angle to the beam of laser input ("right angle scatter"). A second portion of the beam from the laser input that impinges upon the cells in the flow cell is scattered at a much lower angle than 90 DEG . This scatter is termed "low angle forward scatter light" and has an angle of from about 2 DEG to about 5 DEG from the orientation of the original beam from laser input. A right angle scatter light detector is oriented to receive the previously mentioned right angle scatter light. A low angle forward scatter light detector is oriented to capture the previously mentioned low angled forward scatter light oriented at about 2 DEG to about 5 DEG beam from laser input.
Abstract:
A fluorescent immunoassay employing the interior surface of a capillary tube is provided. Devices to permit immunoassays using one or more capillary tubes, an apparatus for use with the devices, and a process for screening for analyte in a sample using the devices and apparatus are also provided. Samples suspected of containing analyte are added to a disposable self-contained sample tray containing one or more sample wells, mixed with a reagent, drawn into one or more spaced-apart capillary tubes held within a disposable cartridge connected to an analytical apparatus, reacted with a binding member on the surface of the capillary tube, washed to stop the reaction, and dried by the apparatus. The capillary tube is then exposed to a signal generation device to create a fluorescence signal that is detected using a signal detector. The apparatus determines the presence of the analyte and optionally determines the amount of analyte present in the sample, and presents the results to the operator.
Abstract:
Recombinant DNA molecules encoding complete canine IgE heavy chain constant region and the DNA sequence for all six exons of canine IgE are disclosed. The canine IgE heavy chain constant region DNA sequence was isolated using a nested walking procedure that is also disclosed. Also disclosed are peptides encoded by said sequences, including recombinant canine IgE heavy chain peptides produced by prokaryotic or eukaryotic cells. Such peptides are used in methods to treat the manifestation of allergy in dogs. Disclosed are antibodies that bind to peptides disclosed herein, as well as such antibodies for use to treat the manifestations of allergy in dogs.
Abstract:
The invention features a medium for the detection of target microbes in particular coliform, in a liquified environmental or biological sample in less than 24 hours.
Abstract:
Management of the health status of an animal colony using a plurality of blood collection cards and the analysis of dried blood from members of the colony that has been collected on the cards. Members of the colony may be removed from the colony as a result of the analysis.
Abstract:
Methods, devices, kits and antibodies for detecting the presence or absence of one or more helminthic co-proantigens in a sample are disclosed herein. The methods, devices, kits and antibodies of the present invention may be used to confirm the presence or absence of roundworm, whipworm and/or hookworm in a fecal sample from a mammal and may also be able to distinguish between one or more helminth infections. Confirmation of the presence or absence of roundworm, whipworm and/or hookworm in the mammal may be made for example, for the pupose of selecting an optimal course of treatment of the mammal and/or for the purpose of determining whether the mammal has been rid of the infection after treatment has been initiated.
Abstract:
A method and device for determining pancreatic lipase in an animal blood sample. In one aspect, the device includes a compartmentalized container for storing and reacting the reagents for use in the assay. In another aspect, the device include a multilayer device having a spreading layer and reagents layers with dried reagents for detecting pancreatic lipase. The devices also includes a system for the optical determination of a color change in the reaction mixture. The method includes the use of the device to detect pancreatic lipase in samples.