Nanomaterial effects on C. elegans lifespan

Nanomaterial: MWNT-15-20: Multi-walled carbon nanotubes
Concentration: 0.21 µg/cm² (dispersant: Tannic acid).
Control: Tannic acid (3.333 µg/mL Agar)
Test Method

Trial 1
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.38 473 -
Nanomaterial 0.94 0.34 167 0.016
Trial 2
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.33 893 -
Nanomaterial 0.92 0.24 135 0.00021