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.
With Form 153 Signature Confirmation you must present the item to a USPS employee which can include handing it to your letter carrier or a retail clerk. For tracking using Form 153, simply visit the USPS website at www.usps.com, or call 1-800-222-1811. In both cases, have your tracking number handy.