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Porcupine's prickly defence mystery solved
BBC News
Porcupine quills easily penetrate flesh but prove hard to remove due to microscopic barbs, say scientists. North American porcupines are famed for their unique defence as they carry 30,000 quills on their backs. Researchers studied the structures to ...
Porcupine quills could help scientists develop less painful hypodermic needlesDaily Mail
Porcupine Quills Reveal Their Prickly SecretsScience AAAS
On quills and needles: Prickly porcupine is a muse for future medical devicesPhys.Org
Healthline (blog) -Nature.com -EurekAlert (press release)
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