At the same time, the applied field induces magnetization in a ferromagnetic collection structure, thereby adding a second, internal gradient which further acts upon the magnetically responsive particles to move them into {HEAD ~ defined region} of the collection vessel for {TAIL ~ analysis} 
At the same time , the applied field induces magnetization in a ferromagnetic collection structure , thereby adding a second , internal gradient which further acts upon the magnetically responsive particles to move them into { HEAD ~ defined region } of the collection vessel for { TAIL ~ analysis }
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL