US PATENT SUBCLASS 424 / 578
.~.~ Lymphoid tissue (e.g., adenoid, lymph node, etc.)

Current as of: June, 1999
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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.~.~ Lymphoid tissue (e.g., adenoid, lymph node, etc.) {2}
579  DF  .~.~.~> Spleen
580  DF  .~.~.~> Thymus gland

DEFINITION

Classification: 424/578

Lymphoid tissue (e.g., adenoid, lymph node, etc.):

(under subclass 577) Subject matter in which the material is or is derived from lymphoid tissue; e.g., adenoid, lymph node, etc.

(1) Note. Included in this subclass are tonsils, and Peyer's patches.