PAS positive substance in the human embryonic thyroid gland at stage 23.
Human thyroid gland was investigated in 6 embryos at stage 23. In 4 embryos, in the peripheral part of the thyroid gland, distinct follicles were observed. Some of them were filled with PAS positive substance.
Bocian-Sobkowska
J
J
Department of Anatomy, K. Marcinkowski University of Medical Sciences, Poznań, Poland.
Woźniak
W
W
D002454:Cell Differentiation / Q000502:physiology; D006801:Humans; D010503:Periodic Acid-Schiff Reaction; D013961:Thyroid Gland / Q000737:chemistry / Q000196:embryology* / Q000648:ultrastructure