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Figure 4: Photomicrograph of medullary carcinoma thyroid: (a) Histopathology section showing extracellular, dense, amorphous, pinkish amyloid material. (H and E, × 400). (b) Histopathology section showing amyloid staining red with Congo red stain. (Congo Red, × 400)

Figure 4: Photomicrograph of medullary carcinoma thyroid: (a) Histopathology section showing extracellular, dense, amorphous, pinkish amyloid material. (H and E, × 400). (b) Histopathology section showing amyloid staining red with Congo red stain. (Congo Red, × 400)