The device includes {HEAD ~ a fluid channel} having {TAIL ~ a surface} and an object such as a bacterium or virus may flow through the fluid channel 
having
The device includes { HEAD ~ a fluid channel } having { TAIL ~ a surface } and an object such as a bacterium or virus may flow through the fluid channel
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH