title: Attempted prophylaxis against meningococcal infection using intramuscular penicillin.
mesh_terms: D006801:Humans; D007273:Injections, Intramuscular; D008589:Meningococcal Infections / Q000517:prevention & control*; D008887:Military Medicine; D010402:Penicillin G Procaine / Q000008:administration & dosage*
chemical_list: D010402:Penicillin G Procaine