| XL | excess lactate; X-linked [inheritance]; xylose-lysine [agar base] |
|---|---|
| XR | xeroradiography; X-linked recessive [inheritance]; x-ray |
| CLIP | Corticotropin-Like Intermediate Peptide |
| IDL | Intermediate Density Lipoprotein; 중밀도 지질 단백질 |
| AIS/MR | Alternative Intermediate Services for the Mentally Retarded |