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 bordered by the village of Bronxville and city of New Rochelle to the north, by the town of Pelham and city of Pelham Manor to the east, by the Hutchinson River and the Eastchester and Wakefield sections of the Bronx, and by the city of Yonkers and the Bronx River to the west.