Fig. 1From: Traceability and distribution of Neisseria meningitidis DNA in archived post mortem tissue samples from patients with systemic meningococcal diseaseThe association between increasing storage time and Ct values of endogenous control HBB in lung tissue from FFPE and FF tissue samples. y-axis show Ct values for HBB gene in lung tissue and x-axis the age of lung tissue at DNA isolation time. The association between increasing storage time and Ct shown as r (spearman) = 0.73, p = 0.009. Empty circles are FF tissue samples. Filled circles represent FFPE tissue samplesBack to article page