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. 2019 Jun 14;14(6):e0217724. doi: 10.1371/journal.pone.0217724

Fig 6. Quality of DNA extracted from clinical LBC samples after long-term storage in CytoRich Red solution.

Fig 6

DNA was extracted using the Promega kit from LBC samples subjected to long-term storage at 4°C in CytoRich Red solution. In samples stored for 4 years, the QC scores gradually increased and amplifiable DNA concentration progressively decreased. However, even in these samples, the QC score less than the cut-off value of 0.04 and suitable for library construction. DNA extracted from FFPE tissues after storage for 4 years were used for as a control.