Absorption Spectra of Blood Proteins from Intermediate and Non-intermediate Hosts of Schistosomes

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Abstract
The absorption spectra of haemoglobins fromA. glabratusandP. corneusand fromB. (P.) globosusandB. (B.) tropicus angolensiswere established. There was no difference between the spectra of snails which transmitSchistosoma mansoniorS. haematobiumand the spectra from related insusceptible species.The snail haemoglobins produced absorption spectra which differed from mammalian pigments only in the position of a single peak.Snail blood occasionally produced additional small peaks in the ultra-violet region, which may have been due to blood proteins other than the respiratory pigment.