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. Author manuscript; available in PMC: 2022 May 1.
Published in final edited form as: Hum Pathol. 2021 Jan 30;111:36–44. doi: 10.1016/j.humpath.2021.01.003

Figure 4:

Figure 4:

A) Das-1 staining highlighting perineural invasion. B) A malignant duct in the vicinity of neural tissue is positive for Das-1 (arrow heads; an area marked by a rectangle is magnified in the right-side image), while normal interlobular duct and low-grade PanIN lesions are non-reactive to Das-1 (arrows). C) Lymphatic invasion with Das-1 expression. D) An example of lymph node metastasis with grade 3 Das-1 expression (an area marked by a rectangle is magnified in the right-side image).