the colonial growth of the 24 strains of pathogenic leptospirae examined was similar to that of other organisms in that the growth was negative in air from which naturally contained co ( 2 ) had been absorbed , the growth tended to be inhibited in 5 to 20 % co ( 2 ) in proportion to the co ( 2 ) concentration , and good colonial growth of leptospirae was obtained in a relatively narrow range of co ( 2 ) concentration ( from the normal amount in air to around 1 % ) .
C0450254
pathogenic
C0029235
organisms