Figure 2From: Long-term storage of blood RNA collected in RNA stabilizing Tempus tubes in a large biobank – evaluation of RNA quality and stabilityThe effect of long-term storage on RNA purity. RNA purity of samples isolated from adult (n = 15 Tempus tubes/year) and cord (n = 6 Tempus tubes/year) blood samples collected in Tempus tubes and stored at –80°C until analysis using Nano Drop™. A) The OD 260/280 ratios for adult and cord blood samples. B) The OD 260/230 ratios for adult and cord blood samples. Each bar represents the average OD-ratios and the error bar indicates ± SE.Back to article page