However, cell signaling may also occur between the cells of two different organisms. In many mammals, early embryo cells exchange signals with cells of the uterus. In the human gastrointestinal tract, bacteria exchange signals with each other and with human epithelial and immune system cells.
Mount Vernon is a city in and the county seat of Posey County, Indiana, United States, in the state's far southwestern corner. The population was 6,687 at the 2010 census. It is located in Black Township and is part of the Evansville, Indiana, metropolitan area, which had a 2000 population of 342,815.
Mount Vernon is located at 31Â°5â²35â³N 88Â°0â²40â³W / 31.09306Â°N 88.01111Â°W / 31.09306; -88.01111 (31.093170, -88.011209). According to the U.S. Census Bureau, the town has a total area of 1.9 square miles (4.9 km2), of which 1.9 square miles (4.9 km2) is land and 0.53% is water. As of the census of 2000, there were 844 people, 333 households, and 228 families residing in the town.