Have you looked at the example? It uses particles.
A particle in AS can be anything -- in the blood samples the particles are ovals. Maybe I just don't understand what you are asking.
Blood Plasma Effect
Moderators: Víctor Paredes, Belgarath, slowtiger
Thanks Chucky....I must admit you had me wondering there for a while 
Cheers
D.K

Cheers
D.K
http://www.creativetvandmedia.com
My store on Renderosity:
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My store on Renderosity:
https://www.renderosity.com/mod/bcs/?uid=921315