Trivia

Hard

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

Sea Urchins
Jellyfish
Horseshoe Crabs
Manatees

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

Blood Drives Tied To Which Of These Movie Franchises Have Collected Over 120,000 Pints Of Blood?

Trivia

Hard

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Trivia

Very Hard

Which Object Has The Longest Orbital Period In Our Solar System?

Trivia

Hard

One Of Tesla’s Early Experiments Caused New Yorkers To Panic Over What?

Trivia

Hard

The Design Of Super Mario Bros. Was Heavily Influenced By Which Novel?

Trivia

Hard

The Heaviest Military Tank Ever Constructed Was Nicknamed The?

Trivia

Very Hard

Which Company Had A Training Game Built By SimCity Creators?

Trivia

Easy

The Maillard Reaction Is Responsible For Flavors In?

Trivia

Very Hard

In Computer Chess, The Computer Evaluates The Value Of Moves Using Which Unit Of Measurement?

Trivia

Very Hard

Which Of These Commonly Used Internet Terms Was First Used In A Similar Context Back In The 17th Century?