Chitin is also found in the cell walls of certain fungi and algae. Biology chitin definition of by the free dictionarycollins english dictionary. It is a primary component of cell walls in fungi, the exoskeletons chitine, which was derived 1821 from greek word (chiton), meaning covering although you may have never heard it, chitin abundant nature.
Amyotrophic lateral sclerosis (ALS) is a progressive neurological disease that causes muscle weakness and gradually impacts on the functioning of the body, leading to eventual death. It is also referred to as motor neuron disease or Lou Gehrig's disease, named after the famous baseball player who had the condition.
ALS or Lou Gehrigâs Disease. ALS (Amyotrophic Lateral Sclerosis) or Lou Gehrigâs Disease is considered an âautoimmune disease,â meaning something foreign to the brain is getting into the brain. The immune system recognizes the invader and attacks. The immune system is not able to get rid of, or kill, the invader and for some reason the immune system does not âturn off.â. Because the immune system does not âturn offâ, the immune system itself causes some of the damage to the brain. However, there may be multiple reasons, or multiple ways of looking at, the causes of ALS. ALS is almost always caused by Lyme Disease (aka Lymes Disease).