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Expression of serotonin receptors in developing human spinal ganglia by semi-quantification.
| Developmental Weeks | sr1 | sr2 | sr3 |
|---|---|---|---|
| 5–6 | + | ++ | +/− |
| 7–8 | ++ | ++/+++ | +/++ |
| 9–10 | ++ | ++/+++ | ++ |
| 9 (cervical spina bifida) | +/++ | ++ | + |
Ventricular zone (vz), intermediate zone (iz), marginal zone (mz), roof plate (rp), floor plate (fp), ventral horn (vh), intermediate horn (ih), dorsal horn (dh), ependymal layer (el). (−) weak expression; (+) mild expression; (++) moderate expression; (+++) strong expression.
