科学家研究仙人掌刺的刺穿性能

一项新的研究发现，仙人掌的刺可以轻易地穿透动物肉体，刺上的细小倒钩像瓦片一样分层，大小完美，可以抓住肌肉和胶原纤维。这些特征也使得这些刺更难移除。

Scientists study puncture performance of cactus spines

https://www.sciencedaily.com/releases/2018/11/181120211638.htm

1. S. B. Crofts, P. S. L. Anderson. The influence of cactus spine surface structure on puncture performance and anchoring ability is tuned for ecology. Proceedings of the Royal Society B: Biological Sciences, 2018; 285 (1891): 20182280 DOI: 10.1098/rspb.2018.2280