Plant injury, day 1. Image 1 of 3. Patient with puncture wounds, swelling and bruising on their arm. The injuries were caused by blackthorn thorns (Pr

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Plant injury, day 1. Image 1 of 3. Patient with puncture wounds, swelling and bruising on their arm. The injuries were caused by blackthorn thorns (Prunus spinosa), which are very long, hard and sharp. See M320/388-390 for a sequence showing the development of the injuries.

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