ANATOMY OF THE AREOLAE AND LACTIFEROUS DUCTS

The nipple contains five to twelve outlets that drain the collecting ducts.

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Slide 19. This transverse cut shows some of the lactiferous ducts filled with secretions. Photographed at 1.5x magnification.
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Slide 20. Major lactiferous ducts are seen longitudinally to descend several centimeters before any blue lobules are present. Photographed at 1x magnification.
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Slide 21. This histological section shows the nipple and some AREOLA. Epithelium stains blue with hematoxylin and stroma stains red with eosin. Note all the lactiferous duct in the nipple. Photographed at 1x magnification.

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Slide 22. At higher magnification a keratin plug (K) is seen. This mechanical barrier prevents bacteria from entering the duct in non-lactating women. Photographed at 63x magnification.
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Slide 23. The histologic slide of a MAJOR DUCT is seen in 2 dimensions. Photographed at 6.3x magnification.
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Slide 24. The same duct is seen in 3 dimensions in the breast slice. It is bent, therefore you see two structures in the histology slide. Photographed at 6.3x magnification.

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slide19.jpg 595.41 Kb Slide 19. This transverse cut shows some of the lactiferous ducts filled with secretions. Photographed at 1.5x magnification.	slide20.jpg 528.74 Kb Slide 20. Major lactiferous ducts are seen longitudinally to descend several centimeters before any blue lobules are present. Photographed at 1x magnification.	slide21.jpg 582.77 Kb Slide 21. This histological section shows the nipple and some AREOLA. Epithelium stains blue with hematoxylin and stroma stains red with eosin. Note all the lactiferous duct in the nipple. Photographed at 1x magnification.
slide22.jpg 1216.31 Kb Slide 22. At higher magnification a keratin plug (K) is seen. This mechanical barrier prevents bacteria from entering the duct in non-lactating women. Photographed at 63x magnification.	slide23.jpg 614.84 Kb Slide 23. The histologic slide of a MAJOR DUCT is seen in 2 dimensions. Photographed at 6.3x magnification.	slide24.jpg 542.79 Kb Slide 24. The same duct is seen in 3 dimensions in the breast slice. It is bent, therefore you see two structures in the histology slide. Photographed at 6.3x magnification.