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 Tracking. USPS Tracking USPS is an officially posted service of the United States, which has a long history dating back to 1775. USPS is mainly aimed at sending the packages and mails to the desired destination with perfect delivery timings. The customers will get fully satisfied by using the services in USPS.