in left side of lobe of thyroid gland left lobe of thyroid gland https://github.com/obophenotype/uberon/wiki/Modeling-paired-structures-Design-Pattern thyroid gland left lobe UMLS:C0229582 UBERON:0001120 Thus, a thyroid capable of forming iodotyrosines and iodothyronines is present in all vertebrates. (...) Certain morphologic changes occur after the biochemical evolution of the thyroid has ceased. In the adult lamprey and in most bony fishes, the gland is not encapsulated. (...) In cartilaginous fish, the thyroid is encapsulated. In the higher vertebrate forms, the thyroid is a one- or two-lobed encapsulated structure.[well established][VHOG] A lobe of thyroid gland that is in the left side of a thyroid gland. VHOG:0000734 EHDAA2:0000965 left thyroid lobe SCTID:170784008 NCIT:C32973 FMA:13369 MA:0000728 EMAPA:18197 lobus sinister (glandula thyroidea) thyroid gland