1263274 M-PE metal-on-polyethylene 8 1263598 Mpe Mycoplasma penetrans 6 1263602 Mpe Mucuna pruriens 2 1263601 Mpe M. penetrans 1 1263599 Mpe Mucuna pruriens extract 1 1263600 Mpe Mucuna pruriens methanolic extract 1