Subaru has one of the world's largest single piece primary mirrors with
an effective aperture of 8.2 meters, and uses various revolutionary technologies to achieve superb image quality.
Some analyses have questioned whether the passive targeting strategy, which depends on the circulating medication slipping through the unique
apertures of a tumor, is
effective, noting that the blood vessels that spring up around tumors may not be as porous as originally thought, and therefore may prevent large quantities
of the nanodrug from reaching its target.