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. 2023 Apr 3;14:1085590. doi: 10.3389/fgene.2023.1085590

FIGURE 3.

FIGURE 3

The threshold cycle (Ct) values for the five endogenous reference genes tested before use in the summer of 2021. C1–C3: retina collected from control (indoor) chicks, T1–T4: retina collected from heat-treated (outdoor) chicks.