ABSTRACT
Secretory cells - specialized structures filled with secretory products (S) that are located in secretory vesicles or reservoirs as seen below in Fig. 1.1:
Often the secretion moves the cellular organelles to a cell wall (the organelles may be reduced and even disappear), or may be accumulated in the free space between plasmatic membrane plasmalemma and the cell wall, and then be excreted out of the cell.
