Page 38 - The Cell in 40 Topics
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The Cell in 40 Topics




                                  Figure 23.
                                  Pancreas cells are able to distinguish sugar mole-
                                  cules from among the millions of other molecules in
                                  the blood.







































                Moreover, they literally count the
                sugar molecules, and decide
                whether there are too many of them,
                or too few.



















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