Nanomaterial effects on C. elegans body size

Nanomaterial: SWNT: Single-walled carbon nanotubes
Concentration: 1.04 µg/cm² (dispersant: Tannic acid).
Control: Tannic acid (6.667 µg/mL Agar)
Test Method

Trial 1
  Worm length
average (normalized)
S.D. n p value
(Student's t-test)
Control 1 0.06 140 -
Nanomaterial 0.95 0.04 25 2.0e-6
Trial 2
  Worm length
average (normalized)
S.D. n p value
(Student's t-test)
Control 1 0.07 176 -
Nanomaterial 0.89 0.06 84 1.7e-27
Trial 3
  Worm length
average (normalized)
S.D. n p value
(Student's t-test)
Control 1 0.09 246 -
Nanomaterial 0.99 0.05 70 0.39