In this configuration {TAIL ~ the sample fluid} enters through the top port 9 of the column 7 and flows through the layers 4, 5 and 6 to bind out and select {HEAD ~ cells} of interest and ultimately drains out the base port 10 
In this configuration { TAIL ~ the sample fluid } enters through the top port 9 of the column 7 and flows through the layers 4 , 5 and 6 to bind out and select { HEAD ~ cells } of interest and ultimately drains out the base port 10
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH