The literature is ambiguous regarding patients deficient in the clotting factor variously known as "SPCA," "proconvertin," and "Factor VII." Sera from some patients are normal in the thrombo- plastin generation test; those from others are ab- normal. Viper venom corrects the clotting de- fect in some cases, but fails to do so in others.
No takes yet. Share an insight, caveat, or question.
Graham et al. (1957) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: