The aim of this study was to describe mitotic and meiotic chromosomes of Cycloneda sanguinea using C-banding. fluorescent in situ hybridization (FISH) rDNA probes. and sequential FISH/Ag-NOR staining. The chromosome number was 2n = 18 + XX for females and 2n = 18 + Xy for males. https://www.lightspeedlovers.shop/product-category/penis-pumps-and-enlargers/