in Pennsylvania's First Congressional District
https://en.wikipedia.org/wiki/Pennsylvania's_1st_congressional_district http://archphila.org/pastplan/MAPS/Arch.pdf
and the Central Garden State

Sunday, January 31, 2021

Horseshoe crab blood: the miracle vaccine ingredient that's saved millions of lives (Natural History Museum, 1/15/21 update)

https://www.nhm.ac.uk/discover/horseshoe-crab-blood-miracle-vaccine-ingredient.html

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