Abstract: The disclosure relates to methods and compositions for evaluating emulsion uniformity. In an exemplary embodiment, the disclosure provides a method for evaluating a quality characteristic of a droplet. The method includes the steps of: encapsulating a plurality of polynucleotides in a droplet, wherein the plurality of polynucleotides comprises at least one species of oligonucleotide; tagging the polynucleotides with a label that identifies the polynucleotides as arising from the droplet; counting a number of species of oligonucleotide tagged with the label; and determining a quality characteristic of the droplet based on the number of species of oligonucleotide tagged with the label. The oligonucleotide may include a first nucleic acid segment and a second nucleic acid segment, wherein the first nucleic acid segment comprises a plurality of random nucleotides; and the second nucleic acid segment comprises a conserved region common to the plurality of oligonucleotides.

Abstract: The disclosure generally relates to method, apparatus and system to detect indels and tandem duplications using single cell DNA sequencing.

Abstract: The disclosed embodiments relate to method, apparatus and system for high throughput single-cell DNA sequencing with droplet microfluidic. In an exemplary embodiment, a microfluidic apparatus is used to provide a rapid and cost-effective targeted genomic sequencing of thousands of cells in parallel. The targeted sequencing can be directed for residual disease detection.