Whole organ fluorescence under UV light. Different organs of wild-type (left side) and transgenic (right side) P0 mice are shown. Upper panels represent bright field images and lower panels represent fluorescence images of different organs. A) brain; B) heart; C) liver; D) spleen; E) lung; F) kidney; and G) eyes. In contrast to the wild-type mouse, all organs of the transgenic mouse are reddish in the bright field and pink under UV light.