NEW: For decades, drug manufacturers have relied on the blood of the horseshoe crab to make vaccines safe. But a synthetic substitute can replace this practice, and just in time—when 14 billion doses of Covid-19 vaccines are needed.
Up to 500,000 horseshoe crabs are bled every year to make an endotoxin test called Limulus amebocyte lysate (LAL). But there is a synthetic alternative to this test called recombinant factor C (rFC) that is more sustainable and more consistent. Adoption of rFC is possible, today.
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