3221601 PNPA p-nitrophenyl acetate 133 3221606 PNPA Port of Nagoya Public Aquarium 2 3221603 PNPA p-nitro-DL-phenylalanine 1 3221604 PNPA p-nitrophenyl anthranilate 1 3221605 PNPA panicle number per unit ground area 1 3221609 PNPA percentage of nondetectable perfused choriocapillaris-area 1 3221607 PNPA Poly(1-napthylamine) 1 3221608 PNPA poly(N-isopropylacrylamide-co-polyethylene glycol acrylate) 1