Of the hemlocks, only western hemlock (Tsuga heterophylla) challenges the mature height of the majority of fir trees. Mountain hemlock grows between 125 and 175 feet in the Pacific Northwest, while the rest of the hemlocks are in the 50- to 100-foot range. Many fir species, such as white fir (Abies concolor) and noble fir (Abies procera), commonly grow between 100 and 150 feet tall.
A single organ or multiple organs and tissues may be affected. There are many autoimmune diseases with symptoms that range from mild rashes to life-threatening conditions that attack major organ systems. Though each disease is different, immune-system malfunction is present in all of them.rgans and tissues frequently affected include the endocrine gland, such as thyroid, pancreas, and adrenal glands; components of the blood, such as red blood cells; and the connective tissues, skin, muscles, and joints. In organ-specific disorders, the autoimmune process is directed mostly against one organ.
Human body has a number of cells and related tissues. Since the Cell is the basic unit of any tissue, it decides the type, nature and function of the tissues. A group of different types of cells form tissues in the human body and one or more types of tissues form organs. These body organs working in a mutual manner form the organ systems. If any tissue is damaged, it actually means the cells and cell structure in the organ is damaged.