Factors affecting the growth of rickettsias of the spotted fever group in fertile hens' eggs.

摘要: results were obtained in eggs incubated before inoculation for 5 to 6 days at 39 C. Lower yields of rickettsias 8 9-day-old embryos, and less than unsatisfactory because they uwere found be too readily killed by the infectious agent or lower incubation temperature (35 C) which subsequently subjected." In later studies Fitzpatrick (1946) growth was evaluated examination Macchiavello-stained