it is suggested that these changes in junctional morphology , occurring in secretory cells around parturition , may be related to the greatly enhanced rate of movement of milk precursors and products through the lactating epithelium , or to the profound and recurrent changes in shape of secretory cells that occur in relation to myoepithelial cell contraction , or to both .
C0014609
epithelium
C0225356
myoepithelial cell