Trivia

Hard

The Blood Of What Marine Animal Is Used In Modern Medicine?

Manatees
Horseshoe Crabs
Sea Urchins
Jellyfish

Answer: Horseshoe Crabs

Horseshoe crabs have blood with a unique property found in their genus and select other marine invertebrates: their blood contains a cell known as an amebocyte that serves as a defensive measure much like white blood cells in mammals.

The amebocytes found in horseshoe crab blood have proved invaluable in modern medical diagnostic work because of their simple and reliable action. An aqueous extract of the amebocytes known as Limulus amebocyte lysate (LAL) reacts strongly with bacterial endotoxins (even if the host bacteria is dead). As such, a blood sample of the patient can be mixed with the LAL and if it congeals (the reaction of the amebocyte to the endotoxins), it’s indicative of gram negative bacterial infection in the patient.

The process was first discovered by Fred Bang back in 1956 but was not approved by the FDA until 1970; since then the diagnostic test has been widely used and has completely replaced earlier methods (which relied on exposing a lab animal to the patient’s blood).

Trivia

Hard

An Entire Genus Of Spiders Is Named After The Cast And Crew Of Which Movie?

Trivia

Hard

A Lipogram Is A Book In Which What Is Omitted?

Trivia

Easy

The Great Lakes Were Formed By?

Trivia

Easy

Coffee Was Originally Decaffeinated Using What Toxic Chemical?

Trivia

Hard

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Trivia

Hard

An Entanglement Of Rats Is Called A?

Trivia

Hard

In The 1980s A Nuclear Safety Task Force Proposed The Creation Of What, To Protect Future Civilizations?

Trivia

Very Hard

The World’s Largest Wayfinding “You Are Here” Map Is Located In?

Trivia

Hard

Aztec Kings Wore Cloaks Made From What Unusual Material?

Trivia

Hard

The Only Crop Banned From The Futures Trading Market In The United States Is?