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.
If your mail has been stolen or tampered with, you could also report the issue using the USPS general contact number or the USPIS phone number. The USPS phone number is: 1-800-ASK-USPS (1-800-275-8777) The USPIS phone number is: 1-877-876-2455.