50% of platelets are produced in the lung

Who knew? Not me, until this morning.

The Lung Is a Site of Platelet Biogenesis and a Reservoir for Haematopoietic Progenitors

  [2017] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5663284/
"The contribution of the lungs to platelet biogenesis is substantial, accounting for approximately 50% of total platelet production or 10 million platelets per hour."


In the lungs. 10 million an hour - holy moly. This is like when I found out about physiological hematopoietic stem cell migration. Or B cells cranking out between ten and a hundred thousand anitbodies per second:
https://youtu.be/J9jcnh3E0Fw

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