#$%^&*AU2016216653A120160908.pdf#####Abstract The invention provides a bio compatible fluorocarbon preparation, having one or more reaction intermediates chosen from the group comprising oxygen, electronically modified oxygen derivatives (EMODs) and electronically modified reaction intermediates, within a 5 bio compatible perfluorocarbon (PFC) matrix. The preparation is suitable for delivering to a mammal an appropriate therapeutic concentration of the reaction intermediate/s, for the purpose of eliciting an immune response. The PFC matrix provides a medium which is chemically inert to oxidation and stabilizes the reaction intermediate/s without significant interaction with or degradation of the PFC matrix. .0 49