Nanomaterial effects on C. elegans body size

Nanomaterial: MWNT-15-20: Multi-walled carbon nanotubes
Concentration: 1 ppm (dispersant: Tannic acid).
Control: Tannic acid
Test Method

Trial 1
  Worm length
average (normalized)		 S.D. n p value
(Student's t-test)
Control 1 0.15 180 -
Nanomaterial 0.91 0.16 48 0.0013
Trial 2
  Worm length
average (normalized)		 S.D. n p value
(Student's t-test)
Control 1 0.1 407 -
Nanomaterial 0.89 0.16 88 3.2e-9