In humans. paralytic poliomyelitis results from the invasion of the central nervous system by circulating poliovirus (PV) via the blood-brain barrier (BBB). After the virus enters the central nervous system (CNS). it replicates in neurons. https://www.diegojavierfares.com/best-price-Electro-Mech-LX174-Ten-Inning-Baseball-Scoreboards-special-buy/