Fig. 5
Adult transgenic fish expressing BRAFV600E in thyrocytes develop invasive thyroid cancer similar to human PTC. (A–B) Representative H&E and IHC staining using anti-thyroglobulin and anti-P-ERK antibodies performed on sagittal sections from control tg-TOM (A) and tumor bearing tg-BRAFV600E-TOM adult zebrafish at 12 mpf (B) (20X magnification). Arrows indicate sites of carcinoma invading skeletal muscle, inset is 40X magnification of skeletal muscle invasion. (C) High magnification photomicrographs of H&E-stained sections from tg-BRAFV600E-TOM animals. Key diagnostic features of papillary thyroid carcinoma are observed: nuclear grooves (arrows), elongated nuclei (arrows), desmoplastic stromal reaction (asterisk) and crowded nuclei (60X magnification). |
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Stage: | Adult |
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Observed In: | |
Stage: | Adult |