| EBNA | Epstein-Barr virus-associated nuclear antigen |
|---|---|
| ENA | epithelial neutrophil-activating [protein]; extractable nuclear antigen |
| NCA | National Certification Agency; National Council on Aging; National Council on Alcoholism; neurocircu... |
| PCNA | proliferating cell nuclear antigen |
| RANA | rheumatoid arthritis nuclear antigen |