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.
There are three types of ALS: familial, sporadic and Guamanian. Familial is inherited genetically and is the least common form, occurring in only about 5-10% of cases. Researchers are still uncertain as to what causes sporadic and Guamanian ALS. There are several common conditions that accompany the illness and these are theorized to be related to the of developing the disease. Some of the most common causes of ALS may include: Heavy metal toxicity.