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. Author manuscript; available in PMC: 2022 Jan 23.
Published in final edited form as: Neurosci Lett. 2020 Dec 30;744:135601. doi: 10.1016/j.neulet.2020.135601

Figure 3: Increased β-endorphin expression in tumors of older transgenic breast cancer mice compared to control breast tissue from younger mice.

Figure 3:

Breast tumors from ~6 month old C3TAg mice and non-tumor breast tissue from ~3 month old C3TAg mice were analyzed for β-endorphin expression. Significantly higher β-endorphin concentration was observed in the tumors compared to non-cancerous mammary tissue. Data are shown as mean ± SEM. Statistical analysis: Student’s two-tailed t-test.