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Latest Christian Petersen Stories

2011-05-16 19:24:39

Most people don't think worms are cool.

2011-05-12 22:18:51

A seldom-studied gene known as notum plays a key role in the planarian's regeneration decision-making process.

2009-09-14 15:37:11

Amputations trigger a molecular response that determines if a head or tail will be regrown in planaria, a flatworm commonly studied for its regenerative capabilities.


Word of the Day
pawl
  • A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.
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