| NCTC | National Cancer Tissue Culture; National Collection of Type Cultures |
|---|---|
| NPCP | National Prostatic Cancer Project; non-Pneumocystis pneumonia |
| NSCLC | non-small-cell lung cancer |
| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
| OVC | ovarian cancer |