| LSN | left substantia nigra |
|---|---|
| RSN | restin; right substantia nigra |
| SG | Sachs-Georgi [test]; salivary gland; serum globulin; serum glucose; signs; skin graft; soluble gelat... |
| SGR | Sachs-Georgi reaction; Shwartzman generalized reaction; skin galvanic reflex; submandibular gland re... |
| SN | sclerema neonatorum; scrub nurse; sensorineural; sensory neuron; serum neutralization; sinus node; s... |