LENNART NILSSON, TT / SCIENCE PHOTO LIBRARY LENNART NILSSON, TT / SCIENCE PHOTO LIBRARY
High res available on request only, commercial use must be cleared, not for use by pro-life (or similar) organisations.
Sperm tail, coloured scanning electron micrograph (SEM). Approximately one thousand swishes of the tail propel the sperm one centimetre forward.
Model release not required. Property release not required.