Historical clue formulations

• Brain cell — 2025-04-01
• Ava mustered every ___ in her brain — 2023-08-30
• Cell that fires on impulse — 2017-10-17
• Cell transmitter — 2015-11-06
• One making cell transmissions — 2015-06-14
• Electrical cell — 2014-11-07
• Cell in a network — 2014-05-15
• One of about 100 billion in the human brain — 2009-10-06
• Synapse neighbor — 2005-12-04
• It does a lot of firing — 2003-03-14
• Brain cell — 2002-06-03
• Brain cell — 2002-01-29
• It acts on impulse — 2002-01-04
• Synapse neighbor — 2001-03-07
• One acting on impulse? — 2000-08-11
• Impulse carrier — 1996-06-26
• Reflex messenger — 1994-06-14