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Biology — PCR Cycle

The three temperature steps of the polymerase chain reaction.

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digraph PCR {
  rankdir=LR;
  node [shape=box, style=rounded];
  "Denaturation (95C)" -> "Annealing (55C)" [label="primers bind"];
  "Annealing (55C)" -> "Extension (72C)" [label="Taq polymerase"];
  "Extension (72C)" -> "Denaturation (95C)" [label="repeat x30"];
  "Extension (72C)" -> "Millions of copies";
}