Multiple Sclerosis (MS) is a chronic, often disabling disease that randomly attacks the central nervous system (brain and spinal cord). ... (Health Central) Although scientists have documented cases of MS in young children and elderly adults, symptoms rarely begin before age 15 or after age 60. ... (Hofmann) "The immune system displays both enormous diversity and extraordinary specificity." ... (Leuven) Investigators are also looking for abnormalities or malfunctions in the blood/brain barrier, a protective membrane that controls the passage of substances from the blood into the central nervou...

• Word Count: 4423
• Approx Pages: 18
• Has Bibliography
• Grade Level: Undergraduate

Multiple Sclerosis Multiple Sclerosis (MS) is a chronic, often disabling disease that randomly attacks the central nervous system (brain and spinal cord). ... (Health Central) Although scientists have documented cases of MS in young children and elderly adults, symptoms rarely begin before age 15 or after age 60. ... Regulatory T cells help orchestrate the elaborate immune system. ... (Leuven) Investigators are also looking for abnormalities or malfunctions in the blood/brain barrier, a protective membrane that controls the passage of substances from the blood into the central nervous system....

• Word Count: 3706
• Approx Pages: 15
• Has Bibliography
• Grade Level: Undergraduate

Introduction The respiratory system is essential to life as the body's provider of oxygen. ... The respiratory system also allows for the excretion of carbon dioxide. The respiratory system is usually considered to comprise: airways (nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles); an area of gas exchange (alveoli); and the necessary structures to drive and control respiration (ribs, intercostals muscles, diaphragm, pleura and nervous system). ... The other components of the respiratory tract, respiratory muscles, nervous system, ribs, etc, while not primarily inv...

• Word Count: 3614
• Approx Pages: 14
• Grade Level: Undergraduate

Other diseases are caused by viruses that attack living cells along with their immune system. ... Some may argue that vaccinations are said to be given to help people's immune systems fight off diseases. ... You can't manipulate the immune system and not think there wouldn't be a response. ... Thiomersal is a toxic compound harmful by inhalation and ingestion and dangerous for the environment.This ingredient itself is known to be very toxic which could lead to kidney, liver, blood and central nervous system disorders. ... It is said that it stimulates our immune system. ...

• Word Count: 2796
• Approx Pages: 11
• Has Bibliography
• Grade Level: High School