| MHB | maximum hospital benefit; Mueller-Hinton base |
|---|---|
| MIB | management information base; Medical Impairment Bureau |
| PAB | para-aminobenzoate; performance assessment battery; pharmacologic autonomic block; poly(A)-binding [... |
| PACS | DB picture archiving and communication system data base |
| PcB | near point of convergence to the intercentral base line [punctum convergens basalis] |