Phylactery

or amulet.. A charm Phylaxin (fl-laks'-in). In biology, the name given by Hankin to an antitoxin or defensive proteid called alexin by Buchner found in animals that have acquired an artificial immunity to a given infectious disease; as distinguished from a sozin, i. e., a defensive proteid that occurs naturally in normal animals. Hankin recognizes two forms of phylaxin: (i) a Mycophylaxin, or defensive proteid produced in the body of an animal which has an acquired immunity to a given infectious disease, which has the power of destroying the pathogenic bacteria to which the disease is due; a Toxophylaxin, or defensive proteid produced in the body of an animal which has an acquired immunity to a given infectious disease, which has the power of destroying the toxic products of the pathogenic bacteria to which the disease is due. (Sternberg.) Phyletic (fi-let'-ik). In biology, phylogenic; relating to the tribal or ancestral history of an organism.