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Genomic Analysis
Which reference DNA can be used with Enzo’s CGH labeling kits?
Every high quality intact genomic DNA of healthy individuals may be used as a reference. Human male (ENZ-GEN106) and female…
Tue, Jul 18, 2023
How should I determine DNA concentration before labeling with Enzo’s CGH labeling kits?
We recommend determining concentration and purity of the genomic DNA using the nucleic acid module of a NanoDrop UV-VIS Spectrophotometer…
Tue, Jul 18, 2023
Enzo suggests using 50 – 100 µg of Cot-1 DNA per sample when hybridizing the DNA labeled with the CGH labeling kits to Agilent arrays, is that correct?
The suggested amount of Cot-1 DNA in the protocols is correct. However, there is no theoretical reason why Enzo's kits…
Tue, Jul 18, 2023
Is there an alternate stop buffer that can be used with Enzo’s CGH labeling kits?
An EDTA solution may be used to stop the reaction prior to purification instead of the supplied stop buffer.
Tue, Jul 18, 2023
Which kit would work for labeling DNA fragments for an microarray?
BIOARRAY® Terminal labeling kit with biotin-ddUTP for DNA probe array assays, ENZ-42630 is the gold standard for end-labeling in microarrays…
Tue, Jul 18, 2023
What are the standard QC parameters this kit must accommodate?
For a typical labeling reaction with an input of 500 ng of high quality genomic DNA, the yield should be…
Tue, Jul 18, 2023
Can DNA labeled with the Enzo Life Sciences kit be used on a Roche NimbleGen™ platform?
Yes, it can be used. It has been noted by cytogenetics labs that Enzo’s CGH labeling kit works perfectly well…
Tue, Jul 18, 2023
Good DLRs in the CGH analytics QC report, but some oligos show whiskering or significant deviation from the expected log2 ratio
We suggest keeping the Cot-1 DNA at 50 µg regardless of the hybridization volume.
Tue, Jul 18, 2023
Poor signal to noise ratio despite good incorporation
Low signal can be caused by inappropriate hybridization conditions (too stringent buffer or excessive temperature) or when the hybridization time…
Tue, Jul 18, 2023
Overview
Array comparative genomic hybridization (aCGH) is a powerful diagnostic tool for detecting DNA copy number gains and losses associated with…
Tue, Jul 18, 2023