<unk> e<unk> s,<unk> yroxine <unk>  and triiodothyronine <unk> , are tyrosine-based hormones produced by<unk> e<unk> yroid gland.  An important component in<unk> e synthesis is iodine.<unk> e major form of<unk>  in<unk> e blood is<unk> yroxine <unk> .<unk> e ratio of<unk>  to<unk>  released in<unk> e blood is roughly 20 to 1.<unk> yroxine is converted to<unk> e active<unk>  <unk> ree to four times more potent<unk> an<unk>  within cells by deiodinases (5'-iodinase). <unk> ese are further processed by decarboxylation and deiodination to produce iodothyronamine (T1a) and<unk> yronamine (T0a).
Thyroid hormone
Parathyroid hormone 
Estrogen
Steroid hormone
Estradiol 
Thyroxine
Calcitonin 
Inhibin