Eyes on the skin. In the teamâs first experiment, the scientists were looking to see whether UV light instigated a calcium signaling response. They found nothing. But guessing that the skin might sense light like the eyes do, they added retinal, a co-factor of opsin receptors including rhodopsin.
Economy shipping takes 1 to 10 business days within the United States and 11 to 20 business days for international. Exact time depends on how far the package must travel. Standard international shipping takes 5 to 10 days.
Ebay economy shipping takes between 2-4 weeks depending on the seller, however you should be very careful when buying from China sellers on eBay, because many times they use the excuse of economy shipping to cross the 45 day threshold for filing a complaint.