Transverse section of definitive thyroid gland of embryo number 4430. The zone of contact between median and lateral components, free of connective tissue, has become broader. Tissues of the parathyroid, lateral thyroid, and median thyroid are shown from the top of the figure downward.
Weller, 1933.
Keywords: definitive thyroid gland, lateral component of thyroid gland, median component of thyroid gland, parathyroid gland, thyroid gland
Source: The Virtual Human Embryo.