摘要:
Disclosed are compositions, methods, and kits useful for detection of the presence and/or quantity of one or more chromosomes from single cells, groups of cells, or subcellular compartments. Provided is a lysis buffer for the preparation of substantially accessible nucleic acid molecules from a single cell. Also provided are moderately-repeated highly-conserved nucleic acid sequences, and oligonucleotide primer and probe molecules which hybridize specifically thereto. Methods for the detection of the presence or quantity of one or more chromosomes from a single cell are included, as are methods for the assessment of the reliability of the results of the methods of the invention. Kits for the convenient practice of the invention are also included.
摘要:
A non-symmetric polymerase chain reaction (PCR) amplification method employing a limiting primer in low concentration whose concentration-adjusted melting point at least equals, and preferably exceeds, that of the excess primer, the latter in turn not being more than 25°C below the melting temperature of the amplicon. Assays employing such amplification and labeled hybridization probes, including assays that include a detection step following primer extension or a low-temperature probe, or both. Kits for performing such assays and primer or primerand-probe sets for performing the foregoing amplifications and assays.