Recapitulation of human xanthinuria type 1 by rosy mutants. (a) Wild-type tubule; (b) tubule from adult ry2 homozygous fly. Both micrographs are at the same magnification, and the diameter of the wild-type tubule can be taken as 35 μm.
Wang et al. Genome Biology 2004 5:R69 doi:10.1186/gb-2004-5-9-r69