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.
LPT: Add 92 to the beginning of your FedEx SmartPost tracking number so you can track it after it reaches USPS through their website. FedEx SmartPost is utilized when it's more economical for low-weight packages to be delivered by the postal service when they will be visiting your house anyway.