| NOS | network operating system; nitric oxide synthetase; non-organ-specific; not on staff; not otherwise s... |
|---|---|
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
| SSO | sequence-specific oligonucleotide [probe]; Society of Surgical Oncology; special sense organ |
| HBsAg/adr | hepatitis B surface antigen manifesting group-specific determinant a and subtype-specific determinan... |
| LSP | left sacroposterior [fetal position]; linguistic string project; liver-specific protein; lymphocyte-... |