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.
This enables you to register yourself to the USPS and keep the record of your package. 1  Tracking by SMS -The USPS also proved a platform to track your shipment through SMS. You just need to type your tracking number and send it to 28777. 2  Tracking by call â You can call on 1-800-222-1811.