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