| 424 / | HD | DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS |
| 520 | DF | EXTRACT, BODY FLUID, OR CELLULAR MATERIAL OF UNDETERMINED CONSTITUTION DERIVED FROM ANIMAL IS ACTIVE INGREDIENT {21} |
| 577 | DF | .~ Hemic or immune system (e.g., hematopoietic system, bone marrow cells, etc.) {1} |
| 578 | DF | .~.~ Lymphoid tissue (e.g., adenoid, lymph node, etc.) {2} |
| 579 | | .~.~.~ Spleen |