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Pathogens that feed off human blood

May 5, 2012, 8:15 am by Scientific American: Health

Bacteria may be tiny little micro-organisms but like any other living creature there are certain molecules that they need for survival. No matter what niche a bacterial colony occupies, it eventually requires a source of iron. For bacteria that live within the human body, there is one incredibly iron-rich molecule that circulates throughout the human body and can be found permeating the tissues.Haemoglobin – the molecule that gives blood its red colour and is used to transport oxgyen through the body. [More]

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