(1) This chapter does not apply to amounts received by a comprehensive cancer center to the extent the amounts are exempt from federal income tax.
(2) For the purposes of this section, "comprehensive cancer center" means a cancer center that has written confirmation that it is recognized by the national cancer institute as a comprehensive cancer center and that qualifies as an exempt organization under 26 U.S.C. Sec. 501(c)(3) as existing on July 1, 2006.