CS of sign re danger. HAMS of man securing lid on armoured container, placing container into wooden crate for shipping. LAMS of beakers on heating unit, woman technician adjusting dial of timer. Various shots of woman technician taking rat from cage, putting it into steel cylinder. MS of woman technician performing disection on guinea pig. Rear MS of man adjusting dials on dosage control panel. MSs of woman technician in laboratory retrieving rats from cage.