liothyronine Triiodothyronine 34 nonhuman 34 animal experiment 32 article 32 rat 26 thyroxine 26 controlled study 24 Animals 22 Animal 20 Female 20 Rats 20 animal cell 20 female 20 priority journal 20 Support, Non-U.S. Gov't 18 thyrotropin 16 Thyroid Gland 14 Thyroid hormones 14 Thyroxine 14 animal 14 dendritic cell 14 mouse 14 Dendritic Cells 12 Male 12 Mice 12 endocrine system 12 metabolism 12 radioisotope 12 thyroid gland 12