cell be 22.91   First, the cells must be safe.
  cell have 7.44   Does a cell have any rights?
  cell divide 4.21   Cancer cells divide rapidly.
  cell produce 3.95   Human cells produce a nearly identical hormone.
  cell die 3.23   Islet cells die.
  cell grow 3.23   As the cells grow, the polymers dissolve.
  cell become 3.03   The cells become malignant.
  cell begin 2.24   Tumor cells simply begin to die.
  cell contain 2.11   Those cells contained the receptor.
  cell make 1.97   Every cell makes nitric oxide.
  cell use 1.91   Dopamine is a hormone brain cells use to exchange messages.
  cell develop 1.58   The cells quickly developed into primitive blood vessels.
  cell form 1.58   Already the pancreatic cancer cells were forming.
  cell take 1.51   The cells took.
  cell leave 1.38   Only a few cancer cells left.
  cell come 1.32   The cells come from foreskins from circumcisions.
  cell work 1.32   But scientists did not know how the cell worked.
  cell need 1.18   But each cell may need only a few genes.
  cell multiply 1.12   Cells multiply rapidly.
  cell respond 1.12   They then tested what chemicals cells with the gene responded to.
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