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Intracellular growth of B. abortusin vitro after 24 h (rSOB24h) in resistant and susceptible breeds of cattle (BON: Blanco Orejinegro Creole; Zebu: Brahman).
| Breed | Classification | n | rSOB24h |
| BON | Resistant | 85 | 5.39 ± 1.83 |
| Zebu | Resistant | 10 | 6.55 ± 5.77 |
| BON | Susceptible | 143 | 26.03 ± 1.56 |
| Zebu | Susceptible | 37 | 36.01 ± 4.88* |
The values are the mean ± SD. *p < 0.05 compared to susceptible BON or Zebu resistant animals.
