Biophysical Journal, Volume 90, February 2006, 1329 - 1337. Unique Properties of Purine/Pyrimidine Asymmetric PNA/DNA Duplexes: Differential Stabilization of PNA/DNA Duplexes by Purines in the PNA Strand Anjana Sen and Peter E. Nielsen. Please watch all my Science videos: https://youtu.be/4lF-qUuuTJw https://youtu.be/w77ccDsTW4U https://youtu.be/3kiKyOmjwqk https://youtu.be/rAm2l6T9PmA https://youtu.be/tmKhhFP-5kc https://youtu.be/ihYwwWSFReA https://youtu.be/0zGDMxYb5pM https://youtu.be/L6Nod6A_-MA https://youtu.be/ljRU7MhqB50 https://youtu.be/hGknjo4ZlxQ https://youtu.be/aOMimS72w04 https://youtu.be/8rs9IxLzVN4