a camera for generating images of the cell over {HEAD ~ time} while the cell remains in the container in {TAIL ~ the housing} and maintained environment 
a camera for generating images of the cell over { HEAD ~ time } while the cell remains in the container in { TAIL ~ the housing } and maintained environment
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH