Adrenal gland

Aorta, media

Appendix, mucosa

Appendix, muscular wall

Bone marrow

Breast - Luminal cells show markedly stronger Cytokeratin 7 staining than basal cells.

Bronchus, mucosa - Strong Cytokeratin 7 immunostaining of all cell types except basal cells.

Cerebellum (molecular layer, Purkinje cell layer, granule cell layer)

Cerebellum (granule cell layer, white matter)

Cerebrum, grey matter

Cerebrum, grey matter - Some pigmented cells are seen in this sample. Absence of true Cytokeratin 7 immunostaining.

Cerebrum, white matter

Colon descendens, mucosa

Colon descendens, muscular wall

Duodenum, Brunner gland

Duodenum, mucosa

Ectocervix

Endocervix

Endometrium, proliferation - The Cytokeratin 7 findings are variable in the endometrium: Not all glands show Cytokeratin 7 positivity.

Endometrium, secretion - The Cytokeratin 7 findings are variable in the endometrium. In this sample, all epithelial cells show a strong Cytokeratin 7 positivity.

Endometrium, secretion - The Cytokeratin 7 findings are variable in the endometrium. In this sample, a fraction epithelial cells shows a strong Cytokeratin 7 positivity while others are completely negative.

Epididymis

Esophagus, squamous epithelium

Esophagus, squamous epithelium

Fallopian tube, mucosa - All epithelial cells but ciliated cells stain Cytokeratin 7 positive in the fallopian tube.

Fat

Gallbladder, epithelium

Heart

Ileum, mucosa

Kidney, cortex - CK 7 staining is seen in collecting ducts and in scattered epithelial cells of the visceral layer of the Bowman capsule.

Kidney, medulla - Strong CK 7 staining is seen in collecting ducts.

Liver

Lung - Moderate Cytokeratin 7 positivity of pneumocytes.

Lymph node

Ovary, stroma

Pancreas - Strong Cytokeratin 7 immunostaining of centroacinar cells of small intercalated ducts in the pancreas. A much weaker memranous and cytoplasmic staining of acinar cells can regionally be seen in some cases.

Pancreas - Strong Cytokeratin 7 immunostaining of centroacinar cells of small intercalated ducts in the pancreas.

Parathyroid - Few cells in the parathyroid glands show moderate intensity Cytokeratin 7 immunostaining.

Parotid gland

Pituitary gland, anterior lobe - Cytokeratin 7 immunostaining is not seen in this adenohypophysis sample.

Pituitary, anterior lobe - Few Cytokeratin 7 cells can be seen in the adenohypophysis in some cases.

Pituitary gland, posterior lobe

Pregnant uterus (decidua)

Placenta, early

Placenta, mature

Placenta (amnion and chorion)

Prostate - Cytokeratin 7 immunostaining is completely absent in this sample.

Prostate - A focal Cytokeratin 7 positivity of acinar cells is seen in this sample while staining is absent in basal cells.

Prostate - A moderate to strong Cytokeratin 7 immunostaining of both acinar and basal cells can be seen in this sample.

Rectum, mucosa

Seminal vesicle

Sinus paranasales - Strong Cytokeratin 7 immunostaining of ciliated and goblet cells. Basal cells exhibit only a weak staining.

Skin

Spleen

Stomach, antrum

Stomach, corpus

Striated muscle

Testis - Cytokeratin 7 immunostaining is negative.

Thymus - Weak Cytokeratin 7 immunostaining of some elements of corpuscles of Hassall's.

Thyroid gland

Tonsil - A small fraction of squamous epithelial cells of the crypts show a moderate to strong Cytokeratin 7 immunostaining.

Tonsil, surface epithelium - Few scattered squamous epithelial cells may stain Cytokeratin 7 positive in the surface epithelium of the tonsil.

Urinary bladder, muscular wall

Urinary bladder, urothelium

Uterus, myometrium