human melanocytes exposed to UVB or UVA in vivo show comparable levels of thymine dimmers.
thymine tautomers support the existence of the canonical form only.
The results at first obtained were very confusing and seemed to show that nucleic acid is very variable in constitution, but thanks to the work ~f Schmiedeberg and Stendel (Germany), Ivar Bang (Sweden) and Walter Jones and Levene (America), the confusion has been reduced to some sort of order, and it now seems probable that all ordinary nucleic acids yield two purine bases, adenine and guanine; two pyrimidine bases, cytosine and thymine and a hexose carbohydrate, the identity of which is uncertain.i The NucleolusIn the majority of plant-nuclei, both in the higher and lower plants, there is found, in addition to the chromatin network, a deeply stained spherical or slightly irregular body (sometimes more than one) called the nucleolus (fig.
thymine dimers in human epidermis and erythema suggests that DNA is the chromophore for erythema.
The next group thymine meeting in the MOO and the Protein self assignment.