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 you are the citizen of the United States, just once in your life you make use of the USPS services (The United States Postal Service). On this website, you can use the USPS tracking service and monitor your parcel or mail with the aid of the unique USPS tracking number.