A zoom lens includes a varifocal lens unit including a plurality of movable lens groups, and a prism disposed on an image side of the varifocal lens unit. These compounds have enhanced and unexpected properties as inhibitors of epidermal growth factor receptor tyrosine kinase and are useful in the treatment of EGFR-TK related diseases and disorders such as cancer. The present invention further discloses a method for claiming awards for the winning tickets upon a drawing of winning numbers. The cells also comprise a caged ligand of the receptor. The droop angles of the radiating arm elements are also adjustable for varying the gain pattern and beamwidth.