Polio vaccine is usually provided in vials containing 10–20 doses of vaccine. A single dose of oral polio vaccine (usually two drops) contains 1,000,000 infectious units of Sabin 1 (effective against PV1), 100,000 infectious units of the Sabin 2 strain, and 600,000 infectious units of Sabin 3. The vaccine contains small traces of antibiotics—neomycin and streptomycin—but does not contain preservatives. In a generic sense, vaccination works by priming the immune system with an 'immunogen'. Stimulating immune response, by use of an infectious agent, is known as immunization. The development of immunity to polio efficiently blocks person-to-person transmission of wild poliovirus, thereby protecting
How the Riddler Got His Name (Paul Pilcz) and his men until Selina arrives. She claims she didn't send him the note and leaves. Sonny and his men start beating him but Bruce finally regains strength and beats them. Before returning to Wayne Manor, he is found by Five, who drugs him and claims that he is made to be him. Five then arrives at Wayne Manor and begins posing as Bruce. Bullock leaves to attend a police academy graduation. Nygma is again confronted by Cobblepot, who just wants him to admit he's lost without him. Nygma refuses and then, in an hallucination, Cobblepot (using the