a hitherto unreported phenomenon is the immediate production of the spectrum of ferrohemochromogens ( in the presence of sodium dithionite ) upon the addition in vitro of hydroxyhemin ( ph 7.6-7.8 ) to the plasmas or sera , as well as to certain cohn plasma protein fractions , of all mammalian species thus far examined .
C0032105
plasmas
C0229671
sera