| XL | 1) X-Linked 2) Extra Large |
|---|---|
| XL | excess lactate; X-linked [inheritance]; xylose-lysine [agar base] |
| XLA, X-LA | X-linked agammaglobulinemia |
| XLAS | X-linked aqueductal stenosis |
| XLCM | X-linked dilated cardiomyopathy |
| XLD | xylose-lysine-deoxycholate [agar] |
| XLH | X-linked hypophosphatemia |
| XLI | X-linked ichthyosis |
| XLMR | X-linked mental retardation |
| XLMTM | X-linked myotubular myopathy |