The linguistic root of tzaraath may mean smiting, in comparison with Arabic, in reference to a Talmudical explanation that it serves as a punishment for sin; it is quite possible that tzaraath was a general term for certain types of skin disease, rather than a particular condition, and the Talmud maintains a similar view, arguing that tzaraath referred generally to any disease that produces sores and eruptions on the skin.
Investigations of keratins extracted from wool by reduction hydrolysis and by alkaline hydrolysis showed that their chemical compositions and secondary structures were similar to original wool. The keratin isolates were similar in amino acid, Amides I and II, and secondary structure to each other and to original wool.
The kind of sheep from which the wool is obtained, its physical condition, the part of the sheep from which the wool is obtained, and the finishing processes are some of the factors, which affect the properties of wool fabric.Composition: The chief constituent of these fibers is the protein substance called Keratin.Chemically these proteins contain 5 elements: carbon, hydrogen, oxygen, nitrogen, and sulfur. This is the only animal fiber, which contains sulfur in its composition. Strength: Wool is the weakest of all natural textile fibers.ool is the most resilient fiber because it has a natural crimp that helps it keep its shape. Wrinkles disappear when the garment or fabric is steamed. Good wool is very soft and resilient; poor wool is harsh. When buying a wool fabric, grasp a handful to determine its quality.