Description: Segment 1 Professor Zuckerman describes viral hepatitis, differentiating between hepatitis A and B. He presents a list of other diseases which may be connected with hepatitis such as yellow fever. After briefly recounting the earliest known reference to hepatitis in the bible, Zuckerman begins to describe the clinical features of the disease. Time start: 00:00:00:00 Time end: 00:05:05:20 Length: 00:05:05:20 Segment 2 Zuckerman focuses, in particular, on how viral hepatitis is transmitted. Infection can occur from tattooing or any procedure which involves piercing the skin. In tropical countries it can be spread by blood-sucking insects. He describes, too, how hepatitis can be passed on through the use of intravenous syringes by drug addicts. Time start: 00:05:05:20 Time end: 00:11:53:00 Length: 00:06:47:05 Segment 3 A short film is shown of a scientist in a laboratory carrying out a reverse passive haemagglutination test to detect hepatitis antigen in the blood. When the film clip finishes, Zuckerman shows a table which lists the different levels of sensitivity of various diagnostic tests. A further short film is shown in which the radioimmunoassay technique for detecting hepatitis antigens in the blood is demonstrated. Time start: 00:11:53:00 Time end: 00:16:19:00 Length: 00:04:26:00 Segment 4 Zuckerman continues to examine the appearance of hepatitis antigens in the blood, referring now to photomicrographs and charts. Time start: 00:16:19:00 Time end: 00:20:34:00 Length: 00:04:15:00 Segment 6 Opening credits for Part 2. Zuckerman begins to discuss research to find treatments for hepatitis. He describes how difficult a condition it is to treat. A short film of an antigen being produced in a laboratory is shown. After the film ends, Zuckerman describes how hepatitis can be passed on through the blood donor programme. This is relatively low in the UK but in tropical countries as many as 20% of the population are carrying hepatitis antigens in their blood. Time start: 00:27:02:14 Time end: 00:32:05:00 Length: 00:05:02:11. Segment 7 Zuckerman discusses a photomicrograph of the Dane particle which is considered to be the hepatitis B virus. He describes in detail the work of Dr Krugman in New York to develop a hepatitis B vaccine. Time start: 00:32:05:00 Time end: 00:38:00:13 Length: 00:05:55:13. Segment 8 A short film is shown in which isoteric focusing is used to show the separation of hepatitis antigens in the blood. Their appearance is discussed. After the film clip, Zuckerman talks about research into the use of hepatitis vaccines on marmosets. Zuckerman ends by discussing future research into a vaccination for hepatitis A. Time start: 00:38:00:13 Time end: 00:45:24:06 Length: 00:07:23:18