What does AF mean in Physiology?

af

.af is the Internet country code top-level domain for Afghanistan. It is administered by AFGNIC, a service of the UNDP and the Islamic Republic of Afghanistan. Registration is made directly at the second level, or on the third level beneath various categorized subdomains at the second level. Third-level domains have restrictions based on which second-level domain they are registered under. Registration on second level is unrestricted, but more expensive. All fees are higher for international registrants.

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