The invention relates to the diagnosis of stroke resulting from occlusion of one or more large vessels in the brain, and in particular to the diagnosis of stroke resulting from occlusion of one or more large vessels in the brain using one or more biomarkers.

The present invention discloses a freeze-dried preparation of chemiluminescent immune microspheres, and a preparation method and an application thereof. The preparation is composed of one or more spherical solid particles having the same composition, which are uniform, smooth, and highly stable. In the preparation process, a magnetic particle coating raw material, an acridinium ester marking raw material and a reagent storage agent are freeze-dried into microspheres, so that the freeze-dried preparation can be stored and transported at normal temperature; the microspheres prepared in the present invention can be sub-packaged conveniently into individual packs, which are hygienic, simple and clear, and convenient to get and use, thereby the safety and convenience of use are improved. The preparation provided by the present invention and the test kit prepared according to the present invention can be used for immunoassays that are not for a disease diagnoses or treatment purpose.

This disclosure describes methods and compositions for detecting the presence of autoantibodies associated with autoimmune polyglandualar syndrome 1 (APS1) in a biological sample. In particular, detection of APS1-specific autoantibodies that specifically bind to certain APS1 associated autoantigens in such methods is described. Also provided are methods of treating subjects with APS1 or at risk of developing APS1 associated conditions. Also provided are devices and kits useful for the diagnosis and prognostic assessment of subjects having APS1 and for assessing subject risk at developing particular APS1-associated conditions.

A method of detecting a particular protein contained in an extracellular vesicle, the method including the steps of: (A) capturing the extracellular vesicle using a carrier capable of binding to an extracellular-vesicle-specific marker present on the surface of the extracellular vesicle; (B) carrying out membrane permeabilization treatment for the extracellular vesicle captured by the carrier, using a membrane permeabilization treatment agent; and (C) introducing a reagent capable of detecting the particular protein contained in the extracellular vesicle, into the membrane-permeabilized extracellular vesicle; wherein Step (B) is carried out such that the particular protein does not leak to the outside of the extracellular vesicle, and such that the reagent can be introduced into the extracellular vesicle.

A method of detecting a particular protein contained in an extracellular vesicle, the method including the steps of: (A) capturing the extracellular vesicle using a carrier capable of binding to an extracellular-vesicle-specific marker present on the surface of the extracellular vesicle; (B) carrying out membrane permeabilization treatment for the extracellular vesicle captured by the carrier, using a membrane permeabilization treatment agent; and (C) introducing a reagent capable of detecting the particular protein contained in the extracellular vesicle, into the membrane-permeabilized extracellular vesicle; wherein Step (B) is carried out such that the particular protein does not leak to the outside of the extracellular vesicle, and such that the reagent can be introduced into the extracellular vesicle.

Isolated anti-IDE antibodies are provided. Each of the antibodies comprise an antigen recognition domain comprising the indicated CDR amino acid sequences. Methods of producing same, methods of using same, pharmaceutical compositions comprising same and articles of manufacture are also provided.

The present application relates to a quantitative kit for myxovirus resistance protein 1. Specifically, a kit comprising latex particles coated with a myxovirus resistance protein 1 antibody is disclosed. Myxovirus resistance protein 1 in human serum and plasma samples and latex particles cross-linked with a myxovirus resistance protein 1 antibody are specifically binded to form a complex, which leads to an increase in absorbance. By detecting changes in immunoturbidity, a higher sensitivity and a wider detection range are reached.

The present application relates to a quantitative kit for myxovirus resistance protein 1. Specifically, a kit comprising latex particles coated with a myxovirus resistance protein 1 antibody is disclosed. Myxovirus resistance protein 1 in human serum and plasma samples and latex particles cross-linked with a myxovirus resistance protein 1 antibody are specifically binded to form a complex, which leads to an increase in absorbance. By detecting changes in immunoturbidity, a higher sensitivity and a wider detection range are reached.

A method for reducing heterogeneity of a virus preparation may include generating virus ions from the virus preparation, repeatedly increasing at least one of a temperature and an incubation period at the increased temperature of at least one of the virus preparation and the generated virus ions, measuring mass-to-charge ratios and charge magnitudes of at least some of the generated virus ions at each increase of the at least one of the temperature and the incubation period, determining a mass spectrum at each increase of the at least one of the temperature and the incubation period based on values of the respective mass-to-charge ratios and charge magnitudes, and determining, based on the mass spectrums, optimum ones of the temperature and the incubation period which together minimize, or at least reduce, a heterogeneity of the virus preparation without aggregation of virus capsids in the virus preparation.

The technology described herein is directed to methods for obtaining partial sequence information from a target protein. Also described herein are systems, devices, and kits for obtaining partial sequence information from a target protein.