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Haemocyanin

Haemocyanin

(Science: chemical) blue, oxygen transporting, copper containing protein found in the blood of molluscs and crustacea.

a very large protein with 20-40 subunits and molecular weight of 2-8 million and having a characteristic cuboidal appearance under the electron microscope. Prior to the introduction of immunogold techniques, it was used for electron microscopic localisation by coupling to antibody.


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Blood is always red, never blue.

... bright red. And yes, the blood is colourless if you remove erythrocytes, but I doubt we can call it blood anymore then. Blood is blue if you have haemocyanin instead of haemoglobin, but that require you to be a horseshoe crab or similar, which utilizes copper instead of iron to carry oxygen. And ...

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by biohazard
Tue Oct 25, 2011 6:50 am
 
Forum: Human Biology
Topic: Blood is always red, never blue.
Replies: 57
Views: 373424

vertebrates!!!

One difference is their blood pigment. Vertebrates' blood pigment is haemoglobin (red color), whereas invertebrates (which have bloods) possess haemocyanin (blue-green in color) mostly and possibly other pigments but not haemoglobin.

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by Dr.Stein
Sat Jul 16, 2005 1:31 pm
 
Forum: Zoology Discussion
Topic: vertebrates!!!
Replies: 9
Views: 6014


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