Description: Segment 1 Gilliland introduces Humphries. Humphries describes why he is interested in non-specific immunity as opposed to more specific kinds of immunity. Time start: 00:00:00:00 Time end: 00:05:39:00 Length: 00:05:39:00 Segment 2 Humphries talks about how microbes can be prevented from penetrating the body without this process involving specific immunological mechanisms. Time start: 00:05:39:00 Time end: 00:11:14:00 Length: 00:05:35:00 Segment 3 Humphries discusses antibodies, differentiating between those inherited at birth from the mother and those acquired during life. Time start: 00:11:14:00 Time end: 00:15:02:12 Length: 00:03:48:12 Segment 4 Humphries continues to look at antibodies and he introduces a short film sequence showing human granulocytes ingesting bacteria. Time start: 00:15:02:12 Time end: 00:19:51:20 Length: 00:04:49:08 Segment 6 Humphrey continues his discussion and detailed description of granulocytes and the role they play in the immune system. He then moves on to discuss cytotaxins. Time start: 00:24:59:00 Time end: 00:29:14:20 Length: 00:05:45:20. Segment 7 Humphrey describes which kind of enzymes are most prevalent in granulocytes - these are listed in a table. He also refers to electron micrographs of macrophages. Time start: 00:29:14:20 Time end: 00:37:16:00 Length: 00:08:02:00. Segment 8 Humphrey talks about opsonins which are specific antibodies which have a specific function during an immune response. Time start: 00:37:16:00 Time end: 00:41:04:00 Length: 00:03:48:00. Segment 9 Humphrey moves on to discuss adjuvants which increase the presence of macrophages during an immune response. Time start: 00:41:04:00 Time end: 00:49:13:00 Length: 00:08:09:00. Segment10 Humphrey concludes the lecture and summarises the main points. Time start: 00:49:13:00 Time end: 00:54:09:13 Length: 00:04:56:13