Why Horseshoe Crab Blood Is So Valuable

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References:
[1] https://www.nationalgeographic.com/animals/2019/02/horseshoe-crabs-related-to-spiders/
[2] https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0108036
[3] https://dnr.maryland.gov/ccs/Pages/horseshoecrab-anatomy.aspx
[4] https://www.frontiersin.org/articles/10.3389/fmars.2018.00185/full
[5] https://www.chemistryworld.com/podcasts/limulus-amebocyte-lysate/3010453.article
[6] https://www.pbs.org/wnet/nature/crash-a-tale-of-two-species-the-benefits-of-blue-blood/595/
[7] https://www.theatlantic.com/technology/archive/2014/02/the-blood-harvest/284078/
[8] https://www.britannica.com/story/horseshoe-crab-a-key-player-in-ecology-medicine-and-more
[9] https://www.horseshoecrab.org/research/sites/default/files/TIBTECH-rFC.pdf
[10] https://www.usp.org/news/rfc-horseshoe-crabs-statement