Fig 1.
Workflow of Imagene process.
Fig 2.
Experimental strategy.
Table 1.
Number of capsules used for each temperature and time point.
Fig 3.
Amplifiable copy numbers of 1064 amplicon, 93 amplicon and genomic DNA.
Table 2.
Genomic DNA recovery.
Fig 4.
Degradation kinetics of DNA stored in DNAshells.
The lines are the fit to the data points by Microsoft Excel software.
Fig 5.
Arrhenius plot for DNA degradation in DNAshells.
The degradation rate constants, k, were plotted as a function of the reverse of the absolute temperature T.
Fig 6.
Half-lives of a 150 nucleotides long DNA fragment stored in various conditions.
The half-life of a DNA sample left unprotected from the atmosphere at room temperature (a) or in an Eppendorf closed tube (b) has been calculated from our previous work [7]. The one of a sample encapsulated in silica nanoparticles (g), deposited on FTA card paper (i) or included in Biomatrica DNAstable (h) has been estimated from [28] (Fig 2B). The half-life of DNA dried with calcium phosphate (e) and encapsulated in magnetic silica nanoparticles (f) have been estimated, respectively from [29] (Fig 3B) and [19] (Fig 5) assuming an exponential decay and an activation energy of 155 kJ/mol. The half-life for DNA stored in Gentegra (d) or trehalose (c) was taken from [29] (Fig 2B). In grey: Current commercialized procedures.