Because A, G, C, and T appear in the DNA, these molecules are called DNA-bases; A, G, C, and U are called RNA-bases. Uracil and thymine are identical except that uracil lacks the 5' methyl group. Adenine and guanine belong to the double-ringed class of molecules called purines (abbreviated as R).
Definition of decalcomania. 1  1 : the art or process of transferring pictures and designs from specially prepared paper (as to glass) 2  2 : decal.
DICOM (Digital Imaging and Communications in Medicine) is a protocol that allows for the sharing of images and other medical information. DICOM permits PACS, radiology information systems and more medical imaging systems to connect with and pass data to systems at other healthcare facilities.