A cell that carries out the final response or function of a particular process. The main effector cells of the immune system, for example, are activated lymphocytes and phagocytesâthe cells involved in destroying pathogens and removing them from the body.
Best Answer: Yes you can track it online here: https://tools.usps.com/go/TrackConfirmAc... The tracking number should look like this: CP 000 000 000 US. You can find it on the receipt, and the customs form you filled out.
USPS Tracking Phone Number: 800-275-8777. Corporate Email: website form. Corporate Stock Symbol: n/a USPS is US Government Agency. USPS (United States Postal Service) is the US Government's mail service. The USPS has been delivering mail since 1175. The USPS was a crucial agency in the formation of the United States.