Figure 2E showed that the catalase (CAT) activity in the BC group demonstrated a sustained upward trend, peaking at 15 and 25 d post-inoculation with significant elevation compared to the CK group (p < 0.05) before declining slightly. In Figure 2F, peroxidase (POD) activity in the BC group significantly decreased at 10 and 15 d (p < 0.05), while the CK group maintained stability. The gene discussed is CAT; the disease is breast cancer.