The present disclosure provides methods, compositions, and systems for distributing polymerase compositions into array regions. In particular, the described methods, compositions, and systems utilize density differentials and/or additives to increase efficiency in the distribution of polymerase compositions to a surface as compared to methods utilizing only diffusion control.

A method for analyzing biological material and a continuous oily phase, which includes a silicone oil and a surfactant, for use in microfluidic devices. The applicant indeed identified a new category of surfactants and an oil/surfactant system which are compatible with molecular biology, improve digital PCR performances and limit sample wasting and dead volume.

A method for analyzing biological material and a continuous oily phase, which includes a silicone oil and a surfactant, for use in microfluidic devices. The applicant indeed identified a new category of surfactants and an oil/surfactant system which are compatible with molecular biology, improve digital PCR performances and limit sample wasting and dead volume.

Provided herein are systems and methods for purifying full-length identifiers from a pool of DNA assembly reactions implemented with a DNA Printer-Finisher System (PFS). The system may include a first printhead configured to dispense a first droplet of a first solution comprising the first component nucleic acid molecule onto a coordinate on a substrate, and a second printhead configured to dispense a second droplet of a second solution comprising the second component nucleic acid molecule onto the coordinate on the substrate, such that the first and second component nucleic acid molecules are collocated on the substrate. The system may include a finisher that dispenses a reaction mix onto the coordinate on the substrate to physically link the first and second component nucleic acid molecules, provides a condition necessary to physically link the first and second component nucleic acid molecules, or both.

Provided herein are systems and methods for purifying full-length identifiers from a pool of DNA assembly reactions implemented with a DNA Printer-Finisher System (PFS). The system may include a first printhead configured to dispense a first droplet of a first solution comprising the first component nucleic acid molecule onto a coordinate on a substrate, and a second printhead configured to dispense a second droplet of a second solution comprising the second component nucleic acid molecule onto the coordinate on the substrate, such that the first and second component nucleic acid molecules are collocated on the substrate. The system may include a finisher that dispenses a reaction mix onto the coordinate on the substrate to physically link the first and second component nucleic acid molecules, provides a condition necessary to physically link the first and second component nucleic acid molecules, or both.

Devices and methods are provided for collecting and handling difficult sample types.

Devices and methods are provided for collecting and handling difficult sample types.

A method of quantifying multiple target nucleic acid sequences in a sample includes generating from a sample at least a plurality of first template molecules and at least a plurality of second template molecules. At least part of said first and at least part of said second template molecules are randomly distributed into individual reaction sites. A cluster of nucleic acid amplicons of said first template molecule and at least a cluster of nucleic acid amplicons of said second template molecule are generated by clonal amplification or replication. The ID codes of all said nucleic acid amplicon clusters are identified. The quantity of at least said first and second target nucleic acid sequences in said sample is quantified by statistical analysis of respective positive numbers of identified unique ID codes of first and second target nucleic acid sequences.

A method of quantifying multiple target nucleic acid sequences in a sample includes generating from a sample at least a plurality of first template molecules and at least a plurality of second template molecules. At least part of said first and at least part of said second template molecules are randomly distributed into individual reaction sites. A cluster of nucleic acid amplicons of said first template molecule and at least a cluster of nucleic acid amplicons of said second template molecule are generated by clonal amplification or replication. The ID codes of all said nucleic acid amplicon clusters are identified. The quantity of at least said first and second target nucleic acid sequences in said sample is quantified by statistical analysis of respective positive numbers of identified unique ID codes of first and second target nucleic acid sequences.

The present invention relates to methods and systems for single molecule based nucleic acid amplification and subsequent detection of nucleic acid molecules, and particularly to the determination of SNPs, mutations, and to the diagnosis of diseases associated with the changes of these nucleic acid molecules.