The present disclosure provides a microarray comprising a plurality of probes. Each probe comprises a first oligonucleotide and a second oligonucleotide. The location of each probe on the microarray can be determined by the length of the first oligonucleotide and the length of the second oligonucleotide, thus providing a spatially barcoded microarray. Also provided are the methods of producing such spatially barcoded microarray. Also provided are the method of using such spatially barcoded microarray.

The present disclosure provides a microarray comprising a plurality of probes. Each probe comprises a first oligonucleotide and a second oligonucleotide. The location of each probe on the microarray can be determined by the length of the first oligonucleotide and the length of the second oligonucleotide, thus providing a spatially barcoded microarray. Also provided are the methods of producing such spatially barcoded microarray. Also provided are the method of using such spatially barcoded microarray.

The present invention relates to methods for determining endonuclease activity in a sample. In particular, the present invention relates to a method for determining viable pathogenic bacteria in a sample based on patterns of endonuclease activity.

The present invention relates to methods for determining endonuclease activity in a sample. In particular, the present invention relates to a method for determining viable pathogenic bacteria in a sample based on patterns of endonuclease activity.

Recombinant transposon end nucleic acids are described that can incorporate barcodes, sequencing primers, or other functional biological sequences. This application also describes mixtures and uses of the recombinant transposon end nucleic acids.

Recombinant transposon end nucleic acids are described that can incorporate barcodes, sequencing primers, or other functional biological sequences. This application also describes mixtures and uses of the recombinant transposon end nucleic acids.

Sequencing adaptors and methods are provided for preparation of polynucleotides for sequencing. The sequencing adaptors contain a portion of a recognition sequence for a methyl-dependent endonuclease. Unwanted adaptor dimers that form during ligation of adaptors to target polynucleotides produce a complete restriction sequence and are cleaved by the endonuclease, followed by exonuclease digestion, thereby removing the dimers.

Sequencing adaptors and methods are provided for preparation of polynucleotides for sequencing. The sequencing adaptors contain a portion of a recognition sequence for a methyl-dependent endonuclease. Unwanted adaptor dimers that form during ligation of adaptors to target polynucleotides produce a complete restriction sequence and are cleaved by the endonuclease, followed by exonuclease digestion, thereby removing the dimers.

The invention provides various orthogonal nucleotide analogues and methods for using combinations of said various orthogonal nucleotide analogues for sequencing by synthesis.

The invention provides various orthogonal nucleotide analogues and methods for using combinations of said various orthogonal nucleotide analogues for sequencing by synthesis.