In chemistry, a racemic mixture, or racemate, is one that has equal amounts of left- and right-handed enantiomers...
Radicals (often referred to as free radicals) are atoms, molecules, or ions with unpaired electrons or an open...
In the field of biochemistry, a receptor is a molecule most often found on the surface of a cell, which receives...
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism\'s principal...
In biology, regeneration is the process of renewal, restoration, and growth that makes genomes, cells, organs,...
Regulatory T cells (Treg), formerly known as suppressor T cells (Ts), are a subpopulation of T cells which...
DNA replication is a biological process that occurs in all living organisms and copies their DNA; it is the basis...
In molecular genetics, a repressor is a DNA-binding protein that regulates the expression of one or more genes by...
A retrovirus is an RNA virus that is duplicated in a host cell using the reverse transcriptase enzyme to produce...
In the fields of molecular biology and biochemistry, a reverse transcriptase, also known as RNA-dependent DNA...
Ribose is an organic compound with the formula C5H10O5; specifically, a monosaccharide (simple sugar) with linear...
A ribosome is a component of cells that synthesizes protein chains. It assembles the twenty specific amino acid...
A ribozyme is an RNA molecule with a well defined tertiary structure that enables it to perform a chemical...
Ribonucleic acid (RNA), is one of the three major macromolecules (along with DNA and proteins). Like...
RNA polymerase (RNAP or RNApol), is an enzyme that produces RNA.
In cells, RNAP is necessary for constructing RNA...
RNA polymerase I (also called Pol I) is, in eukaryotes, the enzyme that only transcribes ribosomal RNA, a type of...
RNA polymerase II (also called RNAP II and Pol II) is an enzyme found in eukaryotic cells. It catalyzes the...
In eukaryote cells, RNA polymerase III (also called Pol III) transcribes DNA to synthesize...
In molecular biology and genetics, splicing is a modification of an RNA after transcription, in which...
RNA virus is a virus that has RNA (ribonucleic acid) as its genetic material. This nucleic acid is usually...
Ribosomal ribonucleic acid (rRNA) is the RNA component of the ribosome, the cell structure that is the site of...