| The later in the course of incubation the disturbance occurred, the milder the degree of teratism, and vice versa. |
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| Though he admits his statistics do not prove that noise is responsible for teratism, he says the suggestion cannot be rejected out of hand. |
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| It has been found that by disturbing hen's eggs or the eggs of serpents at different periods of incubation vastly different forms of teratism result. |
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| Residence under an airport landing pattern as a factor in teratism. |
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| Teratism occurs whenever there is any accidental deviation from normal developmental processes, whenever conditions change beyond the practicable limits of normal adjustment. |
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