Exosome
Exosomes are a subtype of extracellular vesicles, which are lipid bilayer closed structures derived from cells and secreted by almost all types of cells, including exosomes (30-150 nm), micro vesicles ( 150 nm to 1 μm) and apoptotic bodies (1-5 μm). View More 
Plasmid DNA
Plasmids are small double-stranded circular DNA molecules containing extrachromosomal genetic information that exist in archaea, bacteria, and some yeasts. They contain at least one replication origin and can replicate independently. View More 
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