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.
When you print shipping labels from My eBay, the USPS or FedEx tracking number is automatically updated on My eBay and the eBay order details page. An email with the tracking number is sent to your buyer so they know the item has shipped. Easily manage shipping from the Track and manage shipments page in My eBay.