Symptoms, withdrawal
Abnormal physical or psychological features that follow the abrupt discontinuation of a drug that has the capability of producing physical dependence. Common withdrawal symptoms include sweating, tremor, vomiting, anxiety, insomnia, and muscle pain.
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- Synapse
A specialized junction at which a neural cell (neuron) communicates with a target cell. At a synapse, a neuron releases a chemical transmitter that diffuses across a small gap and activates special sites called receptors on the target cell. The target cell may be another neuron or a specialized region of a muscle or secretory […]
- Synapsis
The side-by-side and point-by-point pairing of homologous chromosomes during meiosis.
- Synaptic cleft
The tiny space between two nerve cells across which the neurotransmitter acetylcholine diffuses.
- Synaptonemal complex
SC protein-1 (SYCP1), SC protein-2 (SYCP2), and SC protein-3 (SYCP3). The SYCP1 gene is on chromosome 1p13; the SYCP2 gene is on chromosome 20q13.33; and the gene for SYCP3 is on chromosome 12q.
- Syncephaly
Conjoined twins whose heads are joined together. From syn-, together + -cephaly, head = heads together. Also called craniopagus or janiceps.