Notice the time line at the periphery. Preantral period: It takes 300 days for a recruited primordial to grow and develop to the class 2/3 (0.4 mm) or cavitation (early antrum) stage. Atresia can occur in preantral class 1, 2, and 3 follicles.
Best Answer: Hypercholesterolemia (literally: high blood cholesterol) is the presence of high levels of cholesterol in the blood. Hyperlipidemia is an elevation of lipids (fats) in the bloodstream. These lipids include cholesterol, cholesterol esters (compounds), phospholipids and triglycerides. Hyperlipidemia is caused by an elevated level of any kind of lipid (fat) in the blood stream, while hypercholesterolemia is only caused by high cholesterol in the blood stream. Source(s): izzy Â· 8 years ago
Unfortunately, over time this can be a serious condition that requires attention. I encourage you to talk to your primary care doctor who can better explain, evaluate and treat this situation. Hyperlipidemia means there is an elevated level of lipids (or fats) in your blood.Cholesterol is one type of fat. It is probably the most important type. As for what causes it, there are really two major causes. One is diet. Cholesterol and fats come from animal products.yperlipidemia means there is an elevated level of lipids (or fats) in your blood. Cholesterol is one type of fat. It is probably the most important type. As for what causes it, there are really two major causes. One is diet.