Page 232 - The Miracle in the Cell Membrane

he cell is exceptionally sensitive about what
substances it will absorb into itself. The cell
takes a substance into itself only after deter-
mining whether it will be harmful or benefi-
cial. But how does it makes that determination? No
doubt, hiding behind an irrational and illogical explana-
tion such as coincidence is a refusal to see the facts.
If someone placed a pile of freshly powdered metal in
front of you, how well could you tell whether it was steel,
aluminum or some other useful metal? If you also imag-
ine that you made that distinction quickly, and that the
slightest mistake could have fatal consequences, then you
can better understand the importance of the ability the
cell displays. For example, in cases of need or lack, the
brain gives orders to the intestine to absorb more iron or
phosphorus; and the intestinal cells immediately absorb
iron or phosphorus. The exact opposite also applies. In
the event of a surplus of any such metals, they are
expelled from the cells after receipt from a command
from the brain.
In a similar way, cells in the kidney identify level of
the surplus calcium in the blood and expel that surplus
from the circulation. How is it that cells composed of

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