Gas station without pumps

2020 September 27

Strong enough to trot a mouse on

Filed under: Uncategorized — gasstationwithoutpumps @ 12:39
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I mentioned today to my wife that I needed to remove the tea ball from my tea before it got strong enough to trot a mouse across (the Irish standard for how strong tea should be, but not to my taste for Pu-erh tea).

She wanted to know whether it was always the same mouse trotting across teacups, and we together decided that it should be different mice, but from a pure-bred lab strain.

That leaves the question of which strain.  The two most popular lab strains are C57BL/6 and BALB/c, so the question is which strain. The weights of C57BL/6J mice are given at https://www.jax.org/jax-mice-and-services/strain-data-sheet-pages/body-weight-chart-000664, and there is clearly a major difference by age and sex of the mouse. At five weeks, a female is about 17g, and a male about 20g, but at 24 weeks, the numbers are more like 25g and 35g. BALB/cJ mice seem to be slightly lighter: https://www.jax.org/jax-mice-and-services/strain-data-sheet-pages/body-weight-chart-000651.

So how old and which sex is the standard mouse for trotting across a cup of tea?  Or should the standard be based on just the weight of the mouse?  Does the size of the feet matter? Are there special strains of mice bred by Irish tea companies for testing their tea?

 

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