| MFB | medial forebrain bundle; metallic foreign body |
|---|---|
| NVB | neurovascular bundle |
| PMB | papillomacular bundle; para-hydroxymercuribenzoate; polychrome methylene blue; polymorphonuclear bas... |
| RB | radiation burn; rating board; rebreathing; reticulate body; retinoblastoma; right bronchus; right bu... |
| RBB | right bundle branch |