{HEAD ~ The pipette} is cleaned thoroughly between {TAIL ~ dispenses} and aspirations by flushing with a PBS solution 
is cleaned thoroughly between
{ HEAD ~ The pipette } is cleaned thoroughly between { TAIL ~ dispenses } and aspirations by flushing with a PBS solution
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH