During the autopsy he searched every inch of Mrs Barlow’s skin with a magnifying glass. Eventually he found two tiny holes consistent with injection needles, one on each of Mrs Barlow’s buttocks. The symptoms that Kenneth had said his wife was suffering from were those of hypoglycaemia (low blood sugar), which made David Price suspect that he had injected his wife with a lethal dose of insulin. There were no tests for insulin at the time, so Price took tissue from around the injection points on Mrs Barlow’s buttocks and injected it into mice. They quickly died of hypoglycaemia. Barlow was
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