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.
Lysosomes are surrounded by a membrane composed of phospholipids and contain digestive enzymes. The waste they remove can be in the form of invading bacteria, broken cell parts, or an entire unneeded cell. To unlock this lesson you must be a Study.com Member. Create your account.