Abstract: Physically and chemically latentiated autobiotics are described. The latentiated autobiotics are useful for the treatment or prevention of any disease or condition, which results from the presence of nonself cells in a vertebrate host. Latentiated autobiotics are furthermore useful in suppressing immune rejection processes, as radiosensitizers and as anticoagulants.

Abstract: Physically and chemically latentiated autobiotics are described. The latentiated autobiotics are useful for the treatment or prevention of any disease or condition, which results from the presence of nonself cells in a vertebrate host. Latentiated autobiotics are furthermore useful in suppressing immune rejection processes, as radiosensitizers and as anticoagulants.

Abstract: Addition products of a mono-substituted keto-aldehyde compound with a secondary amine. The compounds have the formula ##STR1## wherein R.sub.1 stands for various organic radicals as defined in the body of the specification and X is a 4-, 5- or 6-member ring or fused double ring which includes a nitrogen atom in the ring attached to the keto-aldehyde group and wherein the latter ring is substituted by =O in the two positions ortho to said nitrogen atom.The compounds are anti-bacterial, anti-viral and anti-neoplastic agents and are valuable in connection with combatting the rejection mechanism in transplantations. They are furthermore useful as radiosensitizers in connection with radiation treatments for various purposes.