Hairpin

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A hairpin is a blunt needle to fixate hair into position.


In genetics, a hairpin is a part of single-stranded DNA, usually a palindromic sequence, that aligns with itself to form a needle-like structure. A single-stranded DNA like

---CCTGCXXXXXXXGCAGG---

becomes

---C G---
   C G
   T A
   G C
   C G
   X X
  X   X
   X X
    X