Plasmocin can also be used as a routine addition in liquid media to prevent mycoplasma and more generally bacterial contamination in small and large animal cell cultures. More info on Mycoplasma eradication Plasmocin™ is a well-established antimycoplasma reagent. It contains two bactericidal components strongly active against mycoplasmas that allow their elimination in only 2 weeks. The first component acts on the protein synthesis machinery while the second acts on the DNA replication. These two specific and separate targets are found only in mycoplasmas and many other bacteria and are completely absent in eukaryotic cells.