Poison quest KO

Hello

I complete the entire poison quest (until the end at Hillbrad foothills and appliance of Hinnot oil) but didn't unlock the skill on my inventory nor in my spellbook.

Could you please help me ? Cannot find the poison icon ...

Thanks

Poisons skill was removed in WotLK. You can now buy poisons from poison vendors.

Raaah OK !! Didn't play for a while.

Thanks !