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Modes of secretion: apocrine
These secretory cells of the mammary glands in the breast secrete by both the merocrine mode, for the protein component of milk, and the apocrine mode for the lipid components. Apocrine secretion involves the loss of a small amount of surface plasma membrane and cytoplasm along with the secretory product. Note the secretory product being released in the lower right of the image. Apocrine secretion occurs only in mammary glands. Breast 1000x
![Acinus <p>These secretory cells of the mammary glands in the breast secrete by both the merocrine mode, for the protein component of milk, and the apocrine mode for the lipid components. Apocrine secretion involves the loss of a small amount of surface plasma membrane and cytoplasm along with the secretory product. Note the secretory product being released in the lower right of the image. Apocrine secretion occurs only in mammary glands. Breast 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/06/T.E.Glands.Ex_.Ov-5-1-ping.png)
Acinus
These secretory cells of the mammary glands in the breast secrete by both the merocrine mode, for the protein component of milk, and the apocrine mode for the lipid components. Apocrine secretion involves the loss of a small amount of surface plasma membrane and cytoplasm along with the secretory product. Note the secretory product being released in the lower right of the image. Apocrine secretion occurs only in mammary glands. Breast 1000x
![Lipid secretory product <p>These secretory cells of the mammary glands in the breast secrete by both the merocrine mode, for the protein component of milk, and the apocrine mode for the lipid components. Apocrine secretion involves the loss of a small amount of surface plasma membrane and cytoplasm along with the secretory product. Note the secretory product being released in the lower right of the image. Apocrine secretion occurs only in mammary glands. Breast 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/06/T.E.Glands.Ex_.Ov-5-2-ping.png)
Lipid secretory product
These secretory cells of the mammary glands in the breast secrete by both the merocrine mode, for the protein component of milk, and the apocrine mode for the lipid components. Apocrine secretion involves the loss of a small amount of surface plasma membrane and cytoplasm along with the secretory product. Note the secretory product being released in the lower right of the image. Apocrine secretion occurs only in mammary glands. Breast 1000x
![Cytoplasmic lipid droplets <p>These secretory cells of the mammary glands in the breast secrete by both the merocrine mode, for the protein component of milk, and the apocrine mode for the lipid components. Apocrine secretion involves the loss of a small amount of surface plasma membrane and cytoplasm along with the secretory product. Note the secretory product being released in the lower right of the image. Apocrine secretion occurs only in mammary glands. Breast 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/06/T.E.Glands.Ex_.Ov-5-3-ping.png)
Cytoplasmic lipid droplets
These secretory cells of the mammary glands in the breast secrete by both the merocrine mode, for the protein component of milk, and the apocrine mode for the lipid components. Apocrine secretion involves the loss of a small amount of surface plasma membrane and cytoplasm along with the secretory product. Note the secretory product being released in the lower right of the image. Apocrine secretion occurs only in mammary glands. Breast 1000x