Oligonucleotide
A short DNA molecule that is composed of relatively few nucleotide bases.
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- Oligonucleotide probe
A short sequence of nucleotides that are synthesized to match a specific region of DNA or RNA then used as a molecular probe to detect the specific DNA or RNA sequence.
- Oligopeptide
A molecule that is composed of a few amino acids linked to one another.
- Oligospermia
Fewer sperm than usual. Azospermia, by contrast, means absolutely no sperm at all.
- Oliguria
Less urination than normal.
- Oliva
The olive, a structure in the brain.