L/S of St. Mary's Hospital. Various shots of medical students entering the hospital, amongst them is athlete Roger Bannister.
Inside laboratory. M/S medical students leaning over bench, a female student has her hands in two jars of salt solution. C/U hands in jars. M/S medical students taking notes. C/U instrument that man is pointing to. M/S students making notes.
C/U small trolley on rails, on this is chart showing cardiography plate. Various shots student sitting in chair with wires attached to him that are connected to cardiography equipment, a doctor checks the equipment. The student's heart rate is recorded by a graph machine.
M/S maze of tubes with dark liquid running around it - the set-up simulates blood circulation. C/U hypodermic needle injecting dark liquid. C/U liquid going through tubes, pan down to artificial mechanical heart. Various shots of gauges and graphs on medical equipment, a doctor adjusts the machines.
High angled shot of doctor and Bannister walking into laboratory, several students are riding exercise bikes - they studying oxygen consumption during exercise. Various shots of students at work in lab. Good C/U Bannister. C/U of student's feet pedalling. C/U of sweaty student's face, he is wearing breathing apparatus.