Science for Health
bottom tail (wildtype) shows normal circulatory flow around the tail muscle, absent in dst tail (top)
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dst embryos (top) show an enlarged heart, but heartbeat is relatively normal compared to wildtype (bottom).
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dst embryos (left) show enlarged heart as well as a paucity of erythrocytes compared to wildtype (right)
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mrs lot tadpoles are paralyzed, and do not respond to tactile stimulus such as being touched with forceps.
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petrified embryos fail to respond to tactile stimulus, such as being touched with forceps. Touching a wildtype outcrossed sibling embryo (top) elicits an escape response.
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petrified tadpole (bottom) shows no heartbeat compared to wildtype embryo (top).
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Wildtype embryo (top) shows beating heart; muzak embryo (bottom) shows no heartbeat.
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at N&F stage 37, cruella heartbeat is very weak.
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at N&F stage 37, wildtype embryos display a robust heartbeat.
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Later stages show a small, abnormal, albeit beating heart, as well as substantial edema.
© MRC National Institute for Medical Research
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