title: Plasma thyroxine and testosterone levels in the red fox (Vulpes vulpes L.) during the annual cycle.
mesh_terms: D000818:Animals; D001683:Biological Clocks; D005589:Foxes / Q000097:blood*; D008297:Male; D012621:Seasons; D013739:Testosterone / Q000097:blood*; D013974:Thyroxine / Q000097:blood*
chemical_list: D013739:Testosterone; D013974:Thyroxine