Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints. Autoimmune diseases are illnesses that occur when the body's tissues are mistakenly attacked by their own immune system.
What role did the bison or buffalo play in the culture of the Plains Indians? The bison were an important source of fur, food, and shelter for the Plains Indians. They used every part of the animals they killed. Bison were also an important part of their culture.
Bison (genus Bison), either of two species of oxlike grazing mammals that constitute the genus Bison of the family Bovidae. The American bison (B. bison), commonly known as the buffalo or the plains buffalo, is native to North America, while the European bison (B. bonasus), or wisent, is native to Europe.