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Heritability Estimates (Determined by Use of ASSOC) for Six Immunological Phenotypes in 15 Utah Genetic Reference Project (CEPH) Families
| Trait | Heritability |
| Lymphocyte count | .611 |
| CD19 B cell level | .608 |
| NK cell level | .463 |
| CD4 T cell level | .564 |
| CD8 T cell level | .699 |
| CD4:CD8 ratio | .462 |
