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    • #16866
      ojomikse
      Participant

      My son is planning a science project about red and blue blood. Where can he find blue blood or how can he make it from red blood?

      Thank you

    • #112449
      JackBean
      Participant

      What’s the purpose of such project if he doesn’t even know, where to get it?

    • #112451
      ojomikse
      Participant

      7th grade. He wants to add O2 to blue blood to make it red.

    • #112453
      JackBean
      Participant

      OK, that the problem. Neither you, nor your son knows there is nothing as blue blood. Not very good start for a scientific project. So, unless you find some princess or snail, you will not get blue blood (unless you drop ink into it;).

    • #112454
      aloksarak
      Participant

      Bluish blood found in Horse Shoe Crab, Limulus polyphemus or Atlantic horseshoe crab

    • #112458
      ojomikse
      Participant

      Here is a website on blue blood from the Children’s Hospital of Wisconsin.

      http://www.chw.org/display/PPF/DocID/23056/router.asp

      On the Children’s Hospital of Wisconsin website they explain how blue blood and purple blood and red blood all work together during Transposition of the Great Arteries (TGA).

      My son would like to conduct some experimentation with blue blood and purple blood and red blood and show how it mixes with O2 to change colors, similar to how it is explained on the Wisconsin hospital website.

    • #112459
      JackBean
      Participant

      That is only picture!!! It could be pictured in blue, yellow and together green. But that doesn’t mean that human blood is ever blue!

    • #112468
      ojomikse
      Participant

      Are you sure there is no blue blood?

      A Dentist friend of mine told me that blood is blue a few days ago. She said that blood is blue until hit touches oxygen, then it immediately turns red, so quickly that we can’t even see it while it’s blue.

      She is one of the head Dental Professors at a large university here in our city, I think she knows what she is talking about. She has been teaching Dentistry for a long time.

    • #112469
      JackBean
      Participant

      Than ask her what pigment makes the blue color.

      Here you have five pages of discussion about763.html

    • #112470
      ojomikse
      Participant

      I read your recommended link on Blue Blood. And I found more Blue Blood information around the internet.

      Very interesting. That will change my son’s science project!

      Do most doctors believe in Blue Blood?

    • #112473
      JackBean
      Participant

      I hope not. Hopefully at least not outside USA. In USA you believe in lots of crap.

    • #112474
      biohazard
      Participant

      The effect of oxygen on blood is easy to check with modern evacuated blood collection tubes: simply draw a sample of venous blood (low on oxygen, deep red) and open the cap of the tube to see if exposure to oxygen changes it. And for comparison, mistakenly hit an artery when taking the sample to see what oxygenated blood looks like! You’ll notice that the arterial blood is brighter red than the venous blood, but both of them are unmistakably red, not blue.

      If that does not convince you, go to your nearest hospital and take a look when they draw an anaerobic blood culture sample. The sample is taken into a vial that contains no oxygen (oxygen is toxic to anaerobic bacteria that they look from the sample). The blood is red also in the anaerobic vial.

      The person who decided 100 years or so ago to start depicting venous blood with blue color in all the anatomical drawings describing the circulatory system must have never guessed how much confusion it ends up causing in the USA 😛

    • #112476
      ojomikse
      Participant

      Thank you for the great info biohazard!

      As a layman, completely removed from the medical community, I thought that (myth) the Blue Blood/Red Blood immediate transformation was quite astonishing after we heard of it the other day, so astonishing in fact that my son decided to test it out in his science project. Now that we have read more about the myth I agree with your observation. Somewhere along the way, people began thinking that there was blue blood because of the combination of the anatomical drawings and the blue color of the veins below our skin. I even understand that they inject blue latex into cadaver’s arteries. I’m sure this may also perpetuate the myth.

      It reminds me a bit, but not to the same degree, of the consternation Benjamen Franklin inadvertently caused throughout the physics and electrical engineering communities when he named the positive and negative electrical charges backwards, although he had logical reasons for doing it that way. Electricity was all just fine until J.J. Thompson discovered the electron about a hundred years after Franklin. Now, everything in electricity, still to this day, is depicted backwards. Now every physicist has to think about electron flow in an opposite way. Today, a layman could study a simple electrical schematic and easily deduce that an electron moves in the opposite direction that it actually does, all because of a decision Benjamin Franklin made some 250 years ago. Unfortunately we’re stuck with negative electrons for eternity!

      It seems as though we’re unable to get things absolutely right on the first pass, at least most of the time. Murphy’s Law I suppose. If a bolt can be screwed on backwards, it eventually will be. How many aircraft accidents have we had while trying to learn that. We get stuck in the ruts of tradition, I’m sure if we could go back in time, with the knowledge we have today, we wouldn’t depict arteries as blue and we would give the electron a positive charge.

    • #112479
      biohazard
      Participant

      I’m glad if I was able to help!

      And as a funny coincidence, I ran a gel electrophoresis sample the other day (a very basic procedure in molecular biology), and I was being a bit absent-minded and managed to connect the electrodes in a wrong way – and because the electron flow goes to the "opposite way" than what one would quickly think it caused my samples to run backwards on the gel.

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