full title == [Horseshoe crab blood is key to making a COVID-19 vaccine—but the ecosystem may suffer.] here is a wikilink regarding the basis and usage of this

full title == [Horseshoe crab blood is key to making a COVID-19 vaccine—but the ecosystem may suffer.] here is a wikilink regarding the basis and usage of this ingredient. https://en.wikipedia.org/wiki/Limulus_amebocyte_lysate https://en.wikipedia.org/wiki/Limulus_amebocyte_lysate this is of interest as part of the quality control phase of production. it seems possible that if this is a contaminant it would cause issues, should PAMP be present at time and site of contact with the contaminant substance [limulus amebocyte lysate] be present. as for environmental concerns there is a possibility of "overfishing" these animals and disturbing the trophic structure of the region for the return of $60,000/Gallon of separated product.