Now, if we look at our XL, the XL also contains its own nucleus that contains a haploid number of chromosomes. This is the cytoplasm of our cell and it also contains organelles that are not shown. We have the plasma membrane of the xcel shown in purple. And we have these cortical granules, these vesicles that contain special enzymes that help initiate the process known as the cortical reaction. And we'll discuss what that is in just a moment. Now, surrounding the plasma membrane of the egg cell, we have a layer of glycoproteins known as the zona pellucida.