The test may cause momentary gagging because the back of the throat is a sensitive area, but it should not be painful. The sample your doctor collects is taken to a laboratory, where it is put on a plate that allows any bacteria on it to grow. This process is called a culture.
Often these are called transition zones which represent the start and end of a specific region and can be large or small. For example, the transition zone between Sub-Saharan Africa and North Africa is rather large because there is a mixing between the two regions. Regional geographers study this zone as well as the distinct characteristics of Sub-Saharan Africa and North Africa.
buffer zone. (1) A transitional area between two areas of different zoning or characteristic land use. (2) Green space or other open or natural areas providing privacy and noise pollution control for a subdivision.n political science, an area between two antagonists that is put in place so they do not attack each other. A famous example of a buffer zone is the demilitarized zone separating North and South Korea. Occasionally, the buffer zone is a third country.