During the population bottleneck, after the great slaughter of American bison during the 1800s, the number of bison remaining alive in North America declined to as low as 541. During that period, a handful of ranchers gathered remnants of the existing herds to save the species from extinction.
Edema Overview. Edema (or Oedema) is the abnormal accumulation of fluid in certain tissues within the body. The accumulation of fluid may be under the skin-usually in dependent areas such as the legs (peripheral edema, or ankle edema), or it may accumulate in the lungs (pulmonary edema).dema Overview. Edema (or Oedema) is the abnormal accumulation of fluid in certain tissues within the body. The accumulation of fluid may be under the skin-usually in dependent areas such as the legs (peripheral edema, or ankle edema), or it may accumulate in the lungs (pulmonary edema).
What Is Cystoid Macular Edema (CME)? Cystoid macular edema or CME, is a painless disorder which affects the central retina or macula. When this condition is present, multiple cyst-like (cystoid) areas of fluid appear in the macula and cause retinal swelling or edema. Symptoms.