CD163 and Bardet-Biedl syndrome: The histomorphometrical analysis showed that comparably high numbers of CD163-positive macrophages were found in the groups of the pure BBS (185.1 ± 54.43 cells/mm2), of the BBS combined with the low concentration of HY (173.0 ± 89.72 cells/mm2), and of the BBS combined with the high concentration of HY (112.6 ± 56.3 cells/mm2) (Figure 2).