Description: Segment 1 Turner introduces the subject of immunoglobulins and briefly traces the history of their discovery. He then lists the five proteins belonging to the immunoglobulin system. Time start: 00:00:00:00 Time end: 00:05:15:16 Length: 00:05:15:16 Segment 2 Turner describes the biological characteristics of immunoglobulins. Time start: 00:05:15:16 Time end: 00:10:37:00 Length: 00:05:21:09 Segment 3 Turner refers specifically and in detail to the work of Professor Rodney Porter who did much work investigating the immunoglobulin structure. He shows examples from Porter's research. Time start: 00:10:37:00 Time end: 00:19:52:00 Length: 00:09:15:00 Segment 4 Turner discusses the Bence Jones protein and refers to diagrams to explain how it works. Time start: 00:19:52:00 Time end: 00:24:34:11 Length: 00:04:42:11 Segment 6 Turner talks about the IgG subclasses and explains their function. Time start: 00:29:45:19 Time end: 00:34:16:00 Length: 00:04:32:06. Segment 7 Turner discusses mast cells and explains their function. Time start: 00:34:16:00 Time end: 00:38:19:11 Length: 00:04:03:11. Segment 8 Turner gives a full account of the polypeptide structure of human IgE, then summarises the lecture. Time start: 00:38:19:11 Time end: 00:42:41:11 Length: 00:04:22:00