Pharmaceutical companies have developed antihistamines, which are chemicals that disrupt the process described above. Antihistamines are designed to bind to histamine receptors. In order to accomplish this, antihistamines must be designed to A.
bind with certain types of white blood cells.
B.
mimic the shape of histamine receptors.
C.
bind with certain portions of histamine molecules.
D.
mimic the shape of histamine molecules.