Biological substances are observed by employing a high internal gradient magnetic capture structure formed within {TAIL ~ a vessel}, in {HEAD ~ conjunction} with an externally applied force for transporting magnetically responsive material toward the capture structure 
Biological substances are observed by employing a high internal gradient magnetic capture structure formed within { TAIL ~ a vessel } , in { HEAD ~ conjunction } with an externally applied force for transporting magnetically responsive material toward the capture structure
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH