A simple coagulometer

@article{DaleASC,
  title={A simple coagulometer},
  author={Henry Hallett Dale and Patrick Playfair Laidlaw},
  journal={The Journal of Pathology and Bacteriology},
  volume={16},
  pages={351-362}
}
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THE COAGULATION TIME OF THE BLOOD IN MAN
TLDR
The conclusion that calcium and citric acid, when administered by the mouth, have no effect on the coagulation time is referred to, and the effect of variations of temperature is described.