Hh

Meaning

Proper Noun

• A protein expressed in the larva of the fruit fly Drosophila melanogaster, required for the proper development of the larval body.
• A blood group system involving the presence of either the H or the h antigen on the surface of a person's red blood cells.

Origin

• ; the gene and the signaling pathway are named after the protein.
• From the two antigenic variants involved in the blood group system (the H and h antigens).