Bloodstream flow

Hi all,

I am kind of new in Unity and I need some pointing in the right direction. I tried to figure out the answer to my question with a quick view of previos related answers, but did not have success and I am kind in a hurry and I need, as said above, to be pointed in the right direction. I apology in advance if this topic is already issued (though I don't think so...)

I am developing apps for Ipad and now I need to simulate a bloodstrem flow, this is, the actual red and white blood cells flowing down an artery. Something similar to this: http://www.youtube.com/watch?v=lYW16lbBWpQ&feature=player_embedded#!.

I made it in 3D max through Particle system and tried to export to .fbx but it did not work. I guess performance could be an issue but what I need for the moment is knowing if it is doable and some tracks!

Thank you in advance