{HEAD ~ Method} and apparatus for separating serum or {TAIL ~ plasma} from the formed elements of the blood 
for separating
{ HEAD ~ Method } and apparatus for separating serum or { TAIL ~ plasma } from the formed elements of the blood
HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH