| 46, XX | 46 chromosomes, 2 X chromosomes (normal female) |
|---|---|
| 46, XY | 46 chromosomes, 1 X and 1 Y chromosome (normal male) |
| HPL | human parotid lysozyme; human peripheral lymphocyte; human placental lactogen |
| HAM | hearing aid microphone; helical axis in motion; human albumin microsphere; human alveolar macrophage... |
| HBT | human brain thromboplastin; human breast tumor |