Could Porcupine Quills Help Us Design the Next Hypodermic Needle?, Science

Microscopic barbs allow porcupine quills to slice into flesh easily and stay there stubbornly—qualities that could prove useful in medical applications

Microstructured barbs on the North American porcupine quill enable

Porcupine Quills Reveal Their Prickly Secrets, Science

Porcupine Quills Reveal Their Prickly Secrets, Science

Porcupine quills could help scientists develop less painful

Porcupine Quills Reveal Their Prickly Secrets, Science

Barbs make porcupine quills into nasty needles : Nature News & Comment

Porcupines' Prickly Quills Could Lead To Easier Injections : Shots

Porcupine Quills Reveal Their Prickly Secrets, Science

What a Porcupine Quill Can Teach Us About Making Better Needles