This diagram depicts the chemical structure of pyrimidine, a six-membered aromatic ring with two nitrogen atoms at positions 1 and 3 (highlighted in blue). The remaining positions are occupied by ...

The chemical structure of uracil, showing its single-ring pyrimidine structure. Uracil forms hydrogen bonds with adenine in RNA, contributing to the molecule's structure and function. (Image: Public ...

To multiply rapidly, cancer cells need to quickly manufacture DNA and RNA, which requires sufficient quantities of purines and pyrimidines. Upon analyzing the levels of 3,000 genes in a T cell ...

Scientists detected all five nucleobases -- building blocks of DNA and RNA -- in samples returned from asteroid Bennu by NASA's OSIRIS-REx mission.

that make up RNA and DNA. Cancer cells must have access to pyrimidine supplies to produce more cancer cells and to produce uridine nucleotides, a primary fuel source for cancer cells as they ...

that make up RNA and DNA. Cancer cells must have access to pyrimidine supplies to produce more cancer cells and to produce uridine nucleotides, a primary fuel source for cancer cells as they ...

Japanese collaborators detected all five nucleobases — building blocks of DNA and RNA — in samples returned from asteroid ...