Sample AgNps of R. stricta AgNps of R. stricta with xylitol cefixime 23 20 2.121320344 AgNps of 450?l 10 12 1.414213562 AgNps of 550?l 13 16 2.121320344 AgNps of 650?l 12 14 1.414213562 plant extract 8 9 0.707106781