The elimination of the anticomplementary reactions of the sera by CO2.
D000818:Animals; D000941:Antigens; D002020:Buffaloes; D002162:Camelus; D002245:Carbon Dioxide; D003168:Complement Fixation Tests; D006041:Goats; D006801:Humans; D012756:Sheep; D013552:Swine; D014437:Typhus, Endemic Flea-Borne / Q000276:immunology; D014438:Typhus, Epidemic Louse-Borne / Q000276:immunology*
D000941:Antigens; D002245:Carbon Dioxide