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.
A simple description of lysosomes is that they are tiny sacs filled with fluid containing enzymes (i.e. proteins that act as biological catalysts) which enable the cell to process its nutrients and are also responsible for destroying the cell after it has died.anging in diameter from approx. 50nm to 1 Î¼m Â§ , lysosomes have a single outer membrane consisting of a phospholipid bilayer and contain acid hydrolases which are enzymes capable of breaking-down macromolecules. Â§ i.e. 50x10-9m to 1x10-6m, which is the same as 0.00005 to 0.001 mm (millimetres).