In a first pregnancy, Rh sensitization is not likely. Usually, it only becomes a problem in a future pregnancy with another Rh positive baby. During that pregnancy, the mother's antibodies cross the placenta to fight the Rh positive cells in the baby's body.
Definition of Lysosome. Lysosome: An organelle (a little organ) in a cell containing enzymes that degrade macromolecules (large molecules) and other items (such as bacteria) taken up by a cell during the process of endocytosis.
Jean Albertin. Lysosome is an organelle filled with enzymes. On function: immunity for the cell. Vacuoles are pockets of fluid or solid drawn into the cell for processing. Plastids are acient organisms living synergistically in the cell (mitochondria, chloroplast).