A. C. D. de Castro, L. C. Benchetrit, and C. M. de Oliveira, “ Effect of subinhibitory concentrations of penicillin on antigens of group G streptococci ”, Rev. Inst. Med. Trop. São Paulo, vol. 28, no. 4, pp. 234–238, Aug. 1986, Accessed: Jul. 17, 2024. [Online]. Available: https://revistas.usp.br/rimtsp/article/view/87494