A Z-like form of poly(dA-dC).poly(dC-bT) in sotation?

Abstract
Circular dichroism was used to study change in conformation of poly (dA-dC).poly(dG-dT) caused by a high concentration of various monovalent salts. It was found that CsF induced the gradual appearance of a negative band in the long wavelength part of the CD spectrum of poly(dA-dC).poly(dG-dT) which might reflect a transition of this DNA toward a Z-like structure.