A method and device for detecting pyrethroid pesticide residues in crops. Reaction membrane is arranged on a bottom plate and provided with a check-up line and a quality control line; a first mounting block and a second mounting block are arranged on the bottom plate; a first slide is arranged in the first mounting block, a second slide is arranged in the second mounting block; a sample pad and a bonding pad are arranged in the first slide; a water absorption pad is arranged in the second slide; a liquid inlet provided with a pipe is formed in the first mounting block, a pressing hole provided with a press block is formed in the second mounting block; protrusions are respectively formed on the pipe and the press block; sliding grooves are formed in the liquid inlet and the pressing hole; and first springs are arranged between the protrusions and the sliding grooves.

A method and device for detecting pyrethroid pesticide residues in crops. Reaction membrane is arranged on a bottom plate and provided with a check-up line and a quality control line; a first mounting block and a second mounting block are arranged on the bottom plate; a first slide is arranged in the first mounting block, a second slide is arranged in the second mounting block; a sample pad and a bonding pad are arranged in the first slide; a water absorption pad is arranged in the second slide; a liquid inlet provided with a pipe is formed in the first mounting block, a pressing hole provided with a press block is formed in the second mounting block; protrusions are respectively formed on the pipe and the press block; sliding grooves are formed in the liquid inlet and the pressing hole; and first springs are arranged between the protrusions and the sliding grooves.

The present invention addresses a problem of providing a method for collecting extracellular vesicles derived from nervous system cells at an improved efficiency.

This problem is solved by a method for collecting extracellular vesicles derived from nervous system cells, said method comprising a step for mixing an anti-APLP1 antibody with a sample containing extracellular vesicles to form anti-APLP1 antibody-extracellular vesicle complexes and a step for collecting the anti-APLP1 antibody-extracellular vesicle complexes.

The present invention addresses a problem of providing a method for collecting extracellular vesicles derived from nervous system cells at an improved efficiency.

This problem is solved by a method for collecting extracellular vesicles derived from nervous system cells, said method comprising a step for mixing an anti-APLP1 antibody with a sample containing extracellular vesicles to form anti-APLP1 antibody-extracellular vesicle complexes and a step for collecting the anti-APLP1 antibody-extracellular vesicle complexes.

The present invention provides recovering an extracellular vesicle(s) having high purity from an extracellular vesicle-containing sample. Specifically, the present invention provides a method of recovering an extracellular vesicle(s), comprising: (1) treating an extracellular vesicle-containing sample with a chelating agent; and (2) separating the extracellular vesicle(s) from the extracellular vesicle-containing sample treated with the chelating agent.

The present invention provides recovering an extracellular vesicle(s) having high purity from an extracellular vesicle-containing sample. Specifically, the present invention provides a method of recovering an extracellular vesicle(s), comprising: (1) treating an extracellular vesicle-containing sample with a chelating agent; and (2) separating the extracellular vesicle(s) from the extracellular vesicle-containing sample treated with the chelating agent.

The disclosure is directed to a device that includes an upper container configured to receive a fluid sample collected from a mammal into a first opening, the first opening opposite a second opening and a membrane covering at least a portion of the second opening, the membrane configured to allow transmission of a portion of the fluid sample through the membrane.

The disclosure is directed to a device that includes an upper container configured to receive a fluid sample collected from a mammal into a first opening, the first opening opposite a second opening and a membrane covering at least a portion of the second opening, the membrane configured to allow transmission of a portion of the fluid sample through the membrane.

A device and method for preparing a sample for solid-liquid or liquid-liquid extraction are provided. In one embodiment, a device includes a sealed container including an opening for receiving a solid sample and a reservoir. The reservoir includes a solvent or is adapted to receive a solvent. The solid sample and the solvent are mixed in the reservoir and to concentrate at least one component of the sample into the solvent within the reservoir. The concentrate is settled into a solvent layer within the container. The solvent layer is sampled via a port. A method includes introducing a solid sample to a solvent; creating a solution by mixing the solid sample with the solvent; allowing the solvent solution to settle into at least one layer; and sampling within at least one layer.

A device and method for preparing a sample for solid-liquid or liquid-liquid extraction are provided. In one embodiment, a device includes a sealed container including an opening for receiving a solid sample and a reservoir. The reservoir includes a solvent or is adapted to receive a solvent. The solid sample and the solvent are mixed in the reservoir and to concentrate at least one component of the sample into the solvent within the reservoir. The concentrate is settled into a solvent layer within the container. The solvent layer is sampled via a port. A method includes introducing a solid sample to a solvent; creating a solution by mixing the solid sample with the solvent; allowing the solvent solution to settle into at least one layer; and sampling within at least one layer.