MS of banks of test tubes rocking back and forth during fractional separation of alkaloids process. CU of rabbit, ZOOM OUT to include animal on thread mill (two takes). TILT UP to man doing experiment, PAN to recorder. LS of whole set-up. Side MS of rabbit moving on thread mill. Front shot of rabbit on thread mill. Profile CUs of head of rabbit looking left then right. ECU of nose of rabbit. Various CUs of machinery used in tests. ESTABLISHING SHOT of laboratory, technician at work. CUs of parts of machinery. Two shots of scientist at work on experiment. Various CUs of technician working at microscope and other apparatus. ECUs of knives cutting slices off specimen for study.