Abstract Osteopetrosis ("marble bone disease") is a descriptive term that refers to a group of rare. heritable disorders of the skeleton characterized by increased bone density on radiographs. The overall incidence of these conditions is difficult to estimate but autosomal recessive osteopetrosis (ARO) has an incidence of 1 in 250. 000 births. https://countryscenesaddleryandpetsuppliers.shop/product-category/show-clothing/