Answer:
It is an antibody.
Explanation:
The protein GEF-H1 is an antibody. The antibodies refer to the molecules of proteins, which are generated by the B-cells of the immune system in reaction towards the antigens, that is, the foreign components like pathogenic viruses and bacteria. The antibodies target particular kinds of foreign bodies, determines them by identifying the particular section of the foreign bodies and neutralizing them with the assistance of different mechanisms.
