Definition of courier: An individual responsible for the exchange of items between two or more parties. Couriers are usually employed by a company that charges a flat rate to the party using the courier service. Federal Express, UPS, DHL, and the United States Post Office all employ couriers to deliver mail and packages.
At least 3 bacterial morphotypes, as well as fungal mycelia, thelastomatid nematodes, and ingested material are found in the hindgut. At annual molt, the lumen bacteria virtually disappear; presumably they are replaced from anterior gut regions, ingested exuvium, and ingested soil.
Bacterial cells. Structure of a salmonella bacterium cell. A bacterium is a single-celled organism [organism: A living being-plant, animal, fungus or bacterium. ] . A bacterial cell has a different structure to an animal or plant cell.tructure of a salmonella bacterium cell. A bacterium is a single-celled organism [organism: A living being-plant, animal, fungus or bacterium. ] . A bacterial cell has a different structure to an animal or plant cell.