The blood-brain barrier (BBB). which forms the interface between the blood and the cerebral parenchyma. has been shown to be disrupted during retroviral-associated neuromyelopathies. Human T Lymphotropic Virus (HTLV-1) Associated Myelopathy/Tropical Spastic Paraparesis (HAM/TSP) is a slowly progressive neurodegenerative disease associated with BBB breakdown. https://toyscyclers.shop/product-category/play-vehicles/