An apparatus for using {HEAD ~ imaging} to measure {TAIL ~ the migration} of at least one cell located in at least one container having a plurality of cells in response to at least one stimulus comprising: 
to measure
An apparatus for using { HEAD ~ imaging } to measure { TAIL ~ the migration } of at least one cell located in at least one container having a plurality of cells in response to at least one stimulus comprising :
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL 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