DNA vaccine plasmid vector Synchotrope TA2M DNA vaccine plasmid Oliver He Rebecca Racz A DNA vaccine plasmid vector that has the plasmid label Synchotrope TA2M. This plasmid is 3683 base pairs in length and has two copies of the murine CpG immune stimulatory sequence AACGTT inserted. vaccine component It has been shown that plasmid half-life in human serum in vitro is 20 minutes PMID: 12833467