For non-invasive measurement of heat dissipation, infrared images of the dorsal and ventral sides were taken using a thermographic camera (Testo 875-1i, Testo AG, Lenzkirch, Germany) from 15 animals (vehicle-treated: n=7; T4-treated: n=8). The dorsal and ventral sides were defined as the surface excluding the head, neck, extremities, and tail. The shaved areas where the incisions were made for implantation of the osmotic pump and temperature logger were excluded from the analysis. Infrared images were generated and analyzed using IRsoft software (vers. 4.7, Testo).
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