The Pathway Ontology (PW), is currently being developed at the Rat Genome Database. For more information about this vocabulary, please see Petri et al. The rat genome database pathway portal. Database (Oxford). 2011 Apr 8;2011:bar010. Print 2011 or contact us (http://rgd.mcw.edu/contact/index.shtml).
The major thyroid hormones thyroxine (T4) or tetraidothyronine and triiodothyronine (T3) are the major thyroid hormones produced via processing of thyroglobulin precursor. T3 is the active hormone and is derived from T4 by the action of deiodinases.