Cando [[Paul Ehrlich]] demostrou en 1891 que incluso os [[toxinas de plantas|velenos vexetais]] causaban a formación de antitoxinas nun organismo, a teoría de Behring quedou confirmada.<ref name=":0" />
AnEn 1924 desenvolveuse unha [[Scarletsoro feverda serumescarlatina|antitoxinantitoxina]] forcontra scarleta fever was developed in 1924escarlatina, simultaneouslysimultaneamente bypor Raymond Dochez ande [[Gladys Dick|Gladys]] ande [[George Frederick Dick]].<ref>Cushing, H. B. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1709338/?page=1 Results of the Use of Scarlet Fever Antitoxin *]. Canadian Medical Association Journal. August, 1926, pg. 936.</ref><ref>Zingher, Abraham . [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1355058/?page=1 The Dick Test and Active Immunization with Scarlet Fever Streptococcus Toxin *]. ''American Journal of Public Health''. November, 1924, pg. 955.
