Preservation of sera by means of paper discs.
D000818:Animals; D000906:Antibodies / Q000032:analysis; D001793:Blood Preservation; D003124:Colorimetry; D046508:Culture Techniques; D004166:Diphtheria Antitoxin / Q000032:analysis*; D004167:Diphtheria Toxin / Q000276:immunology; D004586:Electrophoresis / Q000295:instrumentation; D000882:Haplorhini; D006801:Humans; D007668:Kidney; D010209:Paper
D000906:Antibodies; D004166:Diphtheria Antitoxin; D004167:Diphtheria Toxin