16. A C T I O N S O F H O R M O N E S
631
FIG. 22. Alveolus in a mouse prostate gland grown with 20-methylcholanthrene for 10 days
followed by cultivation in medium with added oestrone (1 /Ltg/ml). Note degeneration of the
hyperplastic epithelium. Haematoxylin-eosin. x 2 8 5 . (From Lasnitzki, 1954.)
FIG. 21. Hyperplastic alveolus in a mouse prostate gland grown with 20-methylcholanthrene
for 10 days and maintained in normal medium for 11 days. Haematoxylin-eosin. x 350.