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.
Within few seconds you will find and track the exact location of your shipment with all the details. USPS Tracking Number Formats For Shipments & Package Tracking. The USPS Tracking Number vary according to formats and the mail you choose in USPS. Here We have given all Tracking number formats to track Shipments & Packages by USPS. USPS Tracking : 9400 1000 0000 0000 0000 00