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186185 - Meat is tested under the microscope in this 1942 film about trichinosis and food poisoning.
186185 - Meat is tested under the microscope in this 1942 film about trichinosis and food poisoning.
00:00:29 Cleared
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187582 - The many forms and locations oaf bacteria are shown in this 1950 film.
187582 - The many forms and locations oaf bacteria are shown in this 1950 film.
00:02:21 Cleared
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187585 - How bacteria adapts to hostile environments as well as how it propells itself is explained.
187585 - How bacteria adapts to hostile environments as well as how it propells itself is explained.
00:02:22 Cleared
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186184 - Meat is inspected and tested in this 1942 film about trichinosis and food poisoning.
186184 - Meat is inspected and tested in this 1942 film about trichinosis and food poisoning.
00:00:57 Cleared
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186204 - The workings of a dairy farm and pasteurization in 1948.
186204 - The workings of a dairy farm and pasteurization in 1948.
00:01:35 Cleared
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186335 - Scientists in laboratories attack the polio epidemic in 1956.
186335 - Scientists in laboratories attack the polio epidemic in 1956.
00:02:47 Cleared
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186338 - The National Institute of Health researches polio in 1956.
186338 - The National Institute of Health researches polio in 1956.
00:01:55 Cleared
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187584 - The 3 types of bacteria are shown. How they eat and reproduce is also explained.
187584 - The 3 types of bacteria are shown. How they eat and reproduce is also explained.
00:03:23 Cleared
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