Fig. 2
From: Purification of nanogram-range immunoprecipitated DNA in ChIP-seq application
Storage condition of purified ChIP DNA is important. Purified ChIP DNA was adjusted to a concentration of 1 ng/μL (a) or 0.1 ng/μL (b), aliquoted into 4 different types of microcentrifuge tubes in 15 μL volume, and stored at −20 °C. DNA was quantified using Qubit dsDNA High Sensitivity assay at the indicated time points and expressed as a percentage of the amount measured at day 0. Three independent DNA samples were used in the experiment and DNA concentration from five tubes were measured at each time point. MaxyClear, Axygen® 1.7 mL MaxyClear Snaplock Microcentrifuge Tube; LoBind, Eppendorf DNA LoBind Snap Cap PCR Tube; Siliconized, Fisherbrand™ Siliconized Low-Retention Microcentrifuge Tube; Premium, Fisherbrand™ Premium Microcentrifuge Tube