In accordance with this object, means are provided adjacent the valve opening for deflecting {TAIL ~ serum} or {HEAD ~ plasma} passing therethrough 
In accordance with this object , means are provided adjacent the valve opening for deflecting { TAIL ~ serum } or { HEAD ~ plasma } passing therethrough
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH