Laboratory PersonnelMedical Laboratory PersonnelLaboratoriesLaboratories, HospitalClinical Laboratory TechniquesSyphilis SerodiagnosisReaginsResearchLaboratory ChemicalsNeurosyphilisMilitary PersonnelTreponema pallidumFlocculation TestsLaboratory InfectionAnimals, LaboratorySyphilisYawsPersonnel, HospitalResearch DesignHemagglutination TestsCardiolipinsTreponema Immobilization Test