Nanomaterial effects on C. elegans lifespan

Nanomaterial: MWNT-15-20: Multi-walled carbon nanotubes
Concentration: 1.04 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 0.3 439 -
Nanomaterial 0.84 0.22 148 3.1e-12
Trial 2
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.32 1555 -
Nanomaterial 0.81 0.22 92 2.6e-12
Trial 3
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.33 893 -
Nanomaterial 0.95 0.19 47 0.067