Fig. 6: Quantification of mRNA content per dose in all analysed vaccine batches using Qubit fluorometry with the Qubit RNA BR Assay Kit.

The values are shown as a percentage of the manufacturer-declared mRNA content per vaccine dose (green dashed line). Each dot represents an individual vial (biological replicate), with values corresponding to the average of two measurements (technical replicates). Horizontal lines indicate the mean of three biological replicates, with error bars showing the standard deviation. Unexpired vaccine batches are marked with an asterisk.