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Heart Defects Causing Extra Blood Flow Through the Lungs Click on the links below to learn more about these topics. Patent Ductus Arteriosus (PDA) Atrial Septal Defect (ASD) Ventricular Septal Defect (VSD) Atrioventricular Canal (AV Canal or AVC)© 2000-2026 The StayWell Company

Multiple Pregnancy Multiple pregnancy is a pregnancy involving more than one fetus. Click on the links below to learn more about this topic. Overview of Multiple Pregnancy Symptoms and Diagnosis of Multiple Pregnancy Complications of Multiple Pregnancy Care and Management of

Topic Index Planning a Pregnancy Prenatal Medical Care Pregnancy Common Discomforts of Pregnancy Common Tests During Pregnancy Risks to Pregnancy Warning Signs During Pregnancy Labor and Delivery Breastfeeding Your Baby Bottle-Feeding Click on the links above to learn more about

The Pregnant Mother Click on the links below to learn more about this topic. Hormones During Pregnancy Weight Gain During Pregnancy Nutrition During Pregnancy Exercise During Pregnancy Work and Pregnancy Sex During Pregnancy Sleeping During Pregnancy© 2000-2026 The StayWell

Cystic Fibrosis in Children Click on the links below to learn more about this topic. Cystic Fibrosis Overview Genetics of Cystic Fibrosis Cystic Fibrosis and the Respiratory System Cystic Fibrosis and the Digestive System Cystic Fibrosis and the Reproductive System Symptoms of

Immune Disorders Many different immune disorders require clinical care by a physician or other health care professional. Listed in the directory below are some, for which we have provided a brief overview. All About the Immune System Immune Deficiencies Disorders of the Immune

Types of Allergens Many different types of allergens can trigger an allergic reaction, requiring clinical care by a physician or other health care professional. Listed in the directory below are some, for which we have provided a brief overview. Animals Dust Mites Foods Egg

Allergens: Dust and Dust Mites What are dust allergens? Dust allergens are substances found in dust. They may include: Fabric fibers. Lint. Feathers. Stuffing materials. Animal protein (dander, saliva, urine, and body oils). Bacteria. Mold and fungus spores. Food particles

Hormones During Pregnancy Many hormone levels are affected in the body during pregnancy. Several hormones play major roles during pregnancy. These are: Human chorionic gonadotropin hormone (hCG). This hormone is made only during pregnancy. It is made almost entirely in the

Anatomy of the Prostate Gland Facts about the prostate gland The prostate gland is about the size of a walnut. It's located just below the bladder, and it surrounds the urethra. This is a tube that carries urine and semen out of the body. The prostate is partly muscular and