Adolfo Martins Penha, Brazilian veterinarian (Rio de Janeiro 1904 – São Paulo 09 January 1990)

Developed a vaccine for calves diarrhea

Modified the method of preparation of crystal violet phenol vaccine introducing glycerine or D’Apice method (1944)

With R. Cury & M. D’Apice. Vacina contra a peste suína. Técnica de preparo. Factores que interferem na sua eficiência. Imunização por via intradérmica. Arq. Inst. Biol. 18 (1947)

Proposed intradermic application of this vaccine 

With M. d’Apice & R. Cury. Vaccination against hog cholera with crystal violet vaccine by the intradermic route. J. Amer. Vet. Med. Assn. 92:230, 1948

With Luiz Braz Siqueira do Amaral first to use antibiotics (isoniazide) in treatment of bovine tuberculosis (1956)