Nanomaterial effects on C. elegans body size

Nanomaterial: CeO2: Cerium oxide nanopowder
Concentration: 25 ppm (dispersant: DI water).
Control: DI Water
Test Method

Trial 1
  Worm length
average (normalized)
S.D. n p value
(Student's t-test)
Control 1 0.07 321 -
Nanomaterial 0.97 0.06 86 0.000015
Trial 2
  Worm length
average (normalized)
S.D. n p value
(Student's t-test)
Control 1 0.06 400 -
Nanomaterial 0.99 0.07 86 0.33