They were starting to  run out of penicillin, so what they would do  was run with his urine across the road to re-synthesize  the penicillin from his urine and give it back to him, and that worked.
Como estavam a ficar sem penicilina, tiveram de usar a urina dele para sintetizar mais penicilina e voltar a administrá-la. Isso funcionou.