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Annotated transverse sections from a CS19 embryo (sample N454, karyotype 46, XY). These sections have been stained using the alcian blue/periodic acid-Schiff technique. This method stains mucins, glycogen, cartilage, glycolipids and connective tissue varying shades of magenta purple and blue and is useful for distinguishing different tissue types.

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Sources for anatomical terms:

Puelles L et al (2013) A developmental ontology for the mammalian brain based on the prosomeric model. Trends Neurosci 36(10):570-8. doi: 10.1016/j.tins.2013.06.004

Hunter A et al (2003) An ontology of human developmental anatomy. J Anat 203 (4):347-55

Bayer S, Altman J. The Human Brain during the Early First Trimester. Boca Raton: CRC Press; 2008. Atlas of Human Central Nervous System Development. Vol.5.

Raymond F Gasser. Atlas of Human Embryos. Harper and Row; 1975.