Unnatural nucleosides have been explored to expand the properties and the applications of oligonucleotides. This paper briefly summarizes nucleic acid analogs in which the base is modified or replaced by an unnatural stacking group for the study of nucleic acid interactions. We also describe the nucleoside analogs of a base pair-mimic structure that we have examined. Although the base pair-mimi...
showing sclerites at base of limbs. Note that first and last pair of appendages are clawed. Fig. i.?Male (X44). Ventral surface, showing sclerites at base of limbs. Note that first and last pair of appendages are clawed.
