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.
In order to track your package by using USPS tracking to then, you can follow the procedure which will help you. 1  At first, you should go to the official website of USPS in order to track a package. 2  You will then find a box in which you should enter your tracking number or waybill number.