Citation | Osman MM, Osman KM, Mohamed MAE, Hashad ME, Almeida JA, Saad A, Franco OL, Heba N Deif (2022). Haemolysin, catalase and hydrogen sulphide production as unique phenotypic virulence determinants, biofilm formation and defense against antibiotics among Mycoplasma arginini and Mycoplasma ovipneumoniae isolated from pneumonic lungs of domestic sheep (Ovis aries). Adv. Anim. Vet. Sci. 10(5): 1174-1188. DOI | http://dx.doi.org/10.17582/journal.aavs/2022/10.5.1174.1188