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.
USPS Package Tracking. To check on the delivery status of your mailing, enter your tracking or confirmation number in the field below. The Confirmation Number is located at the bottom of a Stamps.com shipping label (circled in the diagram to the right). Do not include dashes or spaces. Please note that confirmation numbers are only retained for six (6) months.