The invention features a method of detecting and/or quantifying collagen VII by contacting the sample with collagen IV which binds to collagen VII; and detecting binding of collagen IV with collagen VII. Collagen VII is a major component of anchoring fibrils, which help anchor the top layer of the skin, the epidermis, to the underlying dermis, and thus strengthen and stabilize the skin.

The invention features a method of detecting and/or quantifying collagen VII by contacting the sample with collagen IV which binds to collagen VII; and detecting binding of collagen IV with collagen VII. Collagen VII is a major component of anchoring fibrils, which help anchor the top layer of the skin, the epidermis, to the underlying dermis, and thus strengthen and stabilize the skin.

The present disclosure provides a device and method for measuring an amount of an analyte in a sample, comprising a lateral flow matrix which defines a flow path and which comprises, in series: a sample receiving zone; a labeling zone comprising an unlabeled receptor and a labeled receptor, the unlabeled receptor located downstream of the labeled receptor and separated by a distance; and two serially oriented capture zones capable of providing quantitation of the amount of the analyte in the sample.

Among other things, motility of at least one individual microorganism or a change in motility of at least one individual microorganism or both is or are characterized. The characterized motility or change in motility is used to detect the presence or count of the at least one individual microorganism, or determine the identity of a species or strain of the at least one individual microorganism, or determine a susceptibility of the at least one individual microorganism to one or more antibiotics or other antimicrobials.

The present invention provides an apparatus for detecting the presence or absence of an analyte in liquid sample, including: a collection chamber, including an opening for collecting a liquid sample; a testing element for testing the analyte in liquid sample; and a cover for covering the opening of the collection chamber; wherein the apparatus further includes a prompting device for prompting if the cover is covered to a specified location, and the prompting device shall at least includes a first element and a second element, the first element is in contact with the second element, wherein one element vibrates to produce a sound. In some preferred ways, the second element produces friction with the first element, to cause one of the elements to generate vibrations. The apparatus in the present invention can allow the prompting sound to be clear and loud.

The present invention provides an apparatus for detecting the presence or absence of an analyte in liquid sample, including: a collection chamber, including an opening for collecting a liquid sample; a testing element for testing the analyte in liquid sample; and a cover for covering the opening of the collection chamber; wherein the apparatus further includes a prompting device for prompting if the cover is covered to a specified location, and the prompting device shall at least includes a first element and a second element, the first element is in contact with the second element, wherein one element vibrates to produce a sound. In some preferred ways, the second element produces friction with the first element, to cause one of the elements to generate vibrations. The apparatus in the present invention can allow the prompting sound to be clear and loud.

Methods and devices for sampling, processing and identifying use of a substance or substances of abuse are provided. Systems and kits for sampling, processing and identifying acute use of a substance of abuse is also provided.

The present invention relates to an antiviral composition and a screening method thereof for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that occurred in Wuhan, China in 2019. An extract from leaves or unfertilized female flowers of Cannabis sativa L. or its fraction, and the cannabinoids (CBDs) molecules isolated from it have high binding strength and stability to SARS-CoV-2 MP.sup.pro, thereby inhibiting its action as the main protease, to provide a useful lead molecule that can be used alone or in combination with other drugs to treat SARS-CoV-2.

A sensor may include a prism having a first face; a metal first layer covering, via a contact face, the first face; a light source; and a matrix-array detector; the device may include a dielectric second layer on which rests a transistor including a sheet made of a two-dimensional material, intended to form a channel region, a front face of the sheet comprising a specific functionalization via which specific targets are liable to be adsorbed, the specific functionalization being suitable for placing the adsorbed specific targets at a smaller distance Dd below which detection via electrical measurement by means of the specific transistor and via measurement of resonance of surface plasmons is possible.

Provided herein are arrays, devices, systems, and methods for detection of compounds, such as odorant compounds. The arrays, devices, systems, and methods as described herein may provide patterns of electrical signals, wherein a given pattern may be associated with a given compound or a mixture of compounds such that a presence or a likelihood of a presence of the given compound or mixture of compounds can be determined. The cells expressing an odorant receptor can be present in an array of chambers, each chamber comprising a cell modified to express a unique odorant receptor profile and an electrical component configured to measure an electrical signal in the cell.