Description: Segment 1 Goldberg introduces the second lecture. He talks about porphyria and describes how it can be passed on genetically. Time start: 00:00:00:00 Time end: 00:05:39:00 Length: 00:05:39:00 Segment 2 We see a photograph of the hands and face of a female with porphyria. He reads from a postcard and a journal of a woman suffering from porphyria. Time start: 00:05:39:00 Time end: 00:11:25:17 Length: 00:05:46:17 Segment 3 Goldberg shows a slide of a teenager with porphyria after eating bread contaminated with hexachlorobenzene. He discusses hexachlorobenzene. He talks about the inherited aspects of porphyria and shows a family tree consisting of people suffering from the condition. Time start: 00:11:25:17 Time end: 00:17:15:00 Length: 00:05:49:06 Segment 4 We are shown a family tree of hereditary coproporphyria and slides of journal pages which feature a photograph of a man with erythropoietic porphyria. Time start: 00:17:15:00 Time end: 00:22:45:14 Length: 00:05:30:14 Segment 6 We see how lines in the gum can be indicative of porphyria. Some of the symptoms of the disease can be the same as in acute lead poisoning and Goldberg compares the two. Time start: 00:29:16:19 Time end: 00:31:23:23 Length: 00:02:07:04. Segment 7 Goldberg discusses the problem of lead in water. He refers to studies of this in groups of households in Glasgow. Time start: 00:31:23:23 Time end: 00:36:13:00 Length: 00:04:49:05. Segment 8 We hear about the results of a test in which lead was fed to rats, then lead levels in their organs measured. Goldberg shows a chart which compares levels of protoporphyrin in healthy patients compared to those with iron deficiency anaemia, then after the anaemic patients have been treated with ferrous sulphate. Time start: 00:36:13:00 Time end: 00:42:09:00 Length: 00:05:56:00. Segment 9 Goldberg shows a photomicrograph of the bone marrow of a patient with sideroachrestic anaemia. Then slides showing erythrocyte protoporphyrin levels in various disorders. Time start: 00:42:09:00 Time end: 00:48:10:00 Length: 00:06:01:00. Segment 10 Goldberg concludes the lecture by returning to a photograph of a woman with porphyria, now lying in a hospital bed. She eventually died and he suggests that this was preventable with further research. Time start: 00:48:10:00 Time end: 00:52:47:05 Length: 00:04:37:05