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. 2022 Apr 15;9(4):565. doi: 10.3390/children9040565

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Immunohistochemistry of a teratoid hepatoblastoma. The microphotographs show positivity for polyclonal carcino-embryonic antigen (pCEA) ((a), Avidin-Biotin Complex anti-pCEA immunostaining, ×100 original magnification, scale bar, 50 microns), β-catenin ((b), Avidin-Biotin Complex anti-β-catenin immunostaining, ×100 original magnification, scale bar, 50 microns), (cyto-)keratin 19 (CK19) ((c), Avidin-Biotin Complex anti-K19 immunostaining, ×100 original magnification, scale bar, 50 microns), and α-fetoprotein (AFP) ((d), Avidin-Biotin Complex anti-AFP immunostaining, ×100 original magnification, scale bar, 50 microns).