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.
In the vast majority of ALS cases, no specific cause of the disease can be identified. In about 5 percent of ALS cases, though, the disease is inherited. These familial cases are due to mutations in a number of genes.At this time, researchers have only been able to identify about one-third of the gene mutations responsible for ALS.ost cases of amyotrophic lateral sclerosis (ALS) are not familial and do not run in families. In a minority of ALS cases, though, the disease may be inherited and occur in multiple family members.