| Clue | Source | Date |
|---|---|---|
| Bone marrow lymphocyte: 2 wds. | ||
| Bone marrow lymphocyte | LA Times Daily | 04 Dec 2016 |
| Lymphocyte for antibody production | Newsday | 24 Jul 2016 |
| Bone marrow lymphocyte | ||
| Immune system fighter | ||
| Antibody maker | ||
| Certain lymphocyte | ||
| Lymphocyte found in marrow | ||
| Type of lymphocyte | ||
| Antibody generator | ||
| Certain lymphocyte |