Tissue conversion of thyroxine to triiodothyronine.
D007668:Kidney / Q000378:metabolism*; D008099:Liver / Q000378:metabolism*; D009132:Muscles / Q000378:metabolism*; D013154:Spleen / Q000378:metabolism*; D013974:Thyroxine / Q000031:analogs & derivatives; D014284:Triiodothyronine
D014284:Triiodothyronine; D013974:Thyroxine
KIDNEYS/metabolism; LIVER/metabolism; MUSCLES/metabolism; SPLEEN/metabolism; THYROXIN/derivatives