Rickettsia quintana grew readily on blood-agar base when the following conditions and supplements were supplied: (i) aerobic conditions; (ii) increased CO(2) tension; (iii) crystalline hemoglobin or hemin, but not protoporphyrin; and (iv) a colloidal "detoxifying agent," such as starch or charcoal. Serum was not required nor did it enhance growth when all of the aforementioned components were supplied.
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Myers et al. (1969) studied this question.
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