Life Lines by Dr. Dolittle

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Tag Archive for ‘smell’

Nitrites and noses

If you have ever had a fish tank, you may be familiar with monitoring ammonia levels in the water. Ammonia levels can rise due to overcrowding, overfeeding, as well as fish waste. Nitrite levels in the water also require monitoring as nitrite can bind to hemoglobin, which prevents oxygen from binding. In effect, by preventing oxygen from binding, the fish can succumb to hypoxia. Hannah Hughes, a graduate student working […]

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Sniffing out cancer?

I just saw an interesting review article published in Physiological Reviews that discussed the presence of olfactory (i.e. smell) receptors located outside of the nose. Say what? It turns out that these “smell” receptors are not unique to our nostrils. In fact they are found throughout our bodies. Those found in the heart may be responsible for regulating heart function, those in the immune system are thought to help destroy types […]

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