Nutritional Significance of Symbiotic Bacteria in Two Species of Hemoflagellates

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Science  08 Feb 1974:
Vol. 183, Issue 4124, pp. 531-532
DOI: 10.1126/science.183.4124.531


Symbiote-free strains of Blastocrithidia culicis and Crithidia oncopelti, obtained by chloramphenicol treatment, were compared nutritionally with normal, symbiote-containing strains. The symbiotic bacteria spare the flagellates requirements for exogenous hemin and for other nutritional factors present in liver extract.