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Posts posted by NPK

  1. We all know that we should take our full course of antibiotics because if we don't, it can encourage the growth of naturally antibiotic resistant bacteria.


    My question is: if there are indeed naturally antibiotic resistant bacteria that get selected for during antibiotic use, wouldn't they get selected for anyway even if the full course of antibiotics were taken? If they really are resistant, no quantity of that particular antibiotic would kill them would they?

  2. I know that diabetics often have glucose in their blood but it can't be absorbed into the tissues because of the lack of insulin or lack of insulin receptors..so why do diabetics carry around glucose with them for emergencies? If they haven't got insulin, eating glucose won't do anything...

    I'm obviously missing something!

  3. umm Type O meant that they lack Anti-B and Anti-A...

    My understanding is that people with type O RBCs lack A and B antigens and have anti-A and anti-B antibodies.


    Anyway, assuming your blood types were compatible, you would probably get protection for a few days, up to a week, and then those foreign antibodies etc will get destroyed, leaving no memory cells.

  4. Yes there is - but it's connected to the sternum by cartilage. It's called the "xiphoid process".


    Look here:



    See the dark areas? That's the cartilage that connects the ribs to the sternum - it's flexible so your rib cage will expand when you breathe.


    NPK - how do you "crack" your sternum? Injuring the xiphoid process can cause it to get a callus. I separated mine from the rest of my sternum by hanging over the edge of a boat hatch. I was working on the engine with both hands and all my weight was resting on my ribs. There isn't any way to set it' date=' so it healed at an angle - now I have 3 protrusions on my chest rather than two.[/quote']

    I lean back and push my chest forward if I feel the need to 'crack'. Actually, it isn't really a sharp cracking sound like the sound necks and shoulders make, but it is very audible dulled sound and my girlfriend cringes when she hears it!

  5. you would only gain passive immunity which would fade in a while. active immunity comes when your body fights against real pathogens and produces memory B and T cells which activate when the pathogen triggers the immune system again.


    basically' date=' no it would not work.[/quote']


    Exactly, you would also risk getting serum sickness. Also, your friend's blood is type O, which means they would have anti-A and anti-B antibodies in their blood..if that was injected into you, wouldn't those antibodies attack your own RBCs and cause serious inflammation reactions?

  6. The purpose of this histamine is to signal to other antibodies "Hey buddies' date=' I need some help over here". The other antibodies get this message and come help fight the virus.


    Antibodies don't play a huge part in combatting viral infections do they? My understanding is that viruses (and their host cells) are predominately targeted by the cell mediated immune system rather than the humoral immune system.

  7. As everyone does, I often stretch my shoulders and neck back and head a cracking sound...but often I feel tight in the sternum area and feel like i need to crack it. I do, it gives a little sound and it gives me the relief I was after.


    Does anyone else feel the need to do this sometimes? And what exactly is happening?


    I hope that makes sense!

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