a portal of entry is the route a pathogen takes to enter a host. Typical routes include : mucous membrane, skin and parenteral.
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an open wound, breathing in contaminated air, eating diseased foods, or ?
commercial portal is a portal of commercials ....
No, Portal is for PC only. Portal 2 is for PS3,Xbox 360,and PC. Plus it would suck on PSP.
Portal is the original game in the series. Portal: Still Alive is just extra levels added to the game.
no you cannot anymore because portal prelude was terminated