title: On the second zone of flocculation of crude tetanus toxins.
mesh_terms: D000042:Absorption; D000906:Antibodies; D000937:Antigen-Antibody Reactions; D011232:Chemical Precipitation; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D013743:Tetanus Antitoxin; D013744:Tetanus Toxin
chemical_list: D000906:Antibodies; D013743:Tetanus Antitoxin; D013744:Tetanus Toxin