Nanomaterial effects on C. elegans lifespan

Nanomaterial: Graphene
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 0.85 0.24 60 0.000026
Trial 2
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.38 473 -
Nanomaterial 0.94 0.25 166 0.000012
Trial 3
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.32 1555 -
Nanomaterial 0.99 0.29 139 0.40