348438.fig.001a
(a) Negative control
348438.fig.001b
(b) Normal testicular lesion
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(c) SGCT
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(d) NGCT
Figure 1: Immunohistochemistry of amyloid precursor protein (APP) in testicular tissue specimens. (a) Negative control showing negative immunostaining. (b) Normal testicular lesion showing weak staining (intensity score: 1). (c) Seminomatous germ cell tumor lesion showing negative immunostaining (intensity score: 0). (d) Nonseminomatous germ cell tumor lesion (embryonal cancer component) showing strong APP immunostaining (intensity score: 3). Scale bars, 50 μm.