A method of mass spectrometry is disclosed comprising focusing electromagnetic radiation into a region of a liquid sample 3 below a surface of the liquid sample so as to generate one or more bubbles 4. The one or more bubbles 4 rise to the surface of the liquid whereupon one or more droplets of liquid 6 are emitted from the surface of the liquid sample. The method further comprises directing the one or more emitted droplets 6 towards an inlet of a mass spectrometer 8.

An instrument for detecting signal from a biological sample includes a pipettor module configured to hold a plurality of pipettes in respective pipette positions, to hold liquid in one or more pipette tips, and to pipette liquid in and out of the one or more pipette tips. Each of the one or more pipette tips has a pipette tip point. The instrument further includes one or more magnets positioned such that each of the one or more pipette tips is adjacent one of the one or more magnets.

The present disclosure provides methods, device, assemblies, and systems for dispensing and visualizing single cells. For example, provided herein are systems and methods for dispensing a dispense volume into a plurality of wells of a multi-well device, where, on average, a pre-determined number of cells (e.g., 1-20) are present in the dispense volume, and determining, via a cellular label, the number of cells present in each of the plurality of wells. Such dispensing and cell detection may be repeated a number of times with respect to wells identified as having less than the pre-determined number of cells in order increase the number wells in the multi-well device containing the desired number (e.g., a single cell).

Systems and method for versatile multiplexed spinning/rotating bioassays are provided. This bioassay platform can take the advantage of the high-speed spinning motion, which naturally provides on-the-fly cellular imaging at the rate that cannot be reached by the conventional cameras or laser-scanning techniques, but ultrafast imaging modalities. More importantly, the functionalized solid substrates derived from the disk substrate can be compatible with adherent cell culture as well as biochemically-specific cell-capture, which can now be assayed with ultrafast imaging modalities at an ultra-high-speed line-scan rate of >10 MHz. Large-format spinning high-throughput imaging assay could thus be a potent tool for scaling both the assay throughput as well as content/multiplexity as demanded in many applications, e.g. drug discovery, and rare cancer cell screening.

The microfluidic device of the present invention includes a plate having a first main surface that has an opening area in which a plurality of openings for injecting fluid are formed, a second main surface being the opposite side of the first main surface, and an outer side surface communicating the first main surface and the second main surface; and a reservoir that has an opening with a bottom and is capable of storing liquid, the opening standing above the first main surface outside the opening area.

Multiwell devices and methods of filtration using the multiwell devices are disclosed.

A microfluidic device for the separation and immobilization of one or more cells into sample wells based on one or more physical properties of the one or more cells is provided. Metallic film or magnets are positioned on or below the wells. Openings in the device above the sample wells accommodate a measurement system to determine one or more physical characteristics or properties of the one or more cells immobilized within the microfluidic device. A method for determining a property or one or more physical characteristics of the immobilized one or more cells is also provided.

Disclosed is a kit for detecting content of fluoride ions in a microsample, including: at least one 96-well plate, reagent A, reagent B, reagent C, reagent D, reagent E and a fluoride standard solution having a concentration of 2.5 mg/L. The kit can be used to effectively overcome the uncertainties in the existing methods for detecting fluoride ions, and also involves rapid and convenient operation. Moreover, this method involves simple and rapid operation, the use of a small amount of a sample and simultaneous detection of multiple samples. This kit provides a more standardized detection to lower the human error, thereby allowing for a more reliable result and for a suitable application in the on-site detection of content of fluoride ions in various environments such as in water quality engineering or in the laboratory.

Described herein are aspects of a microfluidic separation and assay system that can include a microfluidic contactless dielectrophoretic (cDEP) device, a microfluidic concentrator, and a microfluidic assay chamber. In some aspects, microfluidic separation and assay system can be included on a single microfluidic chip. Also described herein are methods of using the microfluidic separation and assay system described herein.

A method of generating a plurality of spatially co-registered data elements, each spatially co-registered data element being associated with and generated from a pair of co-registered tissue sections obtained from adjacent positions of a core taken from a tissue sample and including an image data section and a genomic data section. The method includes, for each pair of co-registered tissue sections: (i) obtaining and storing as part of a data element a plurality of multi to hyperplexed images from the imaging data section of the co-registered tissue section, (ii) generating and storing as part of the data element image data from the plurality of multi to hyperplexed images, and (iii) generating and storing as part of the data element genomic data from the genomic data section of the associated co-registered tissue section.