Case 206. Reference case 206B

　 　 　 　
　 Blood smear from a febrile Kenyan 25 y-o woman runner, who completed to run the next day as a member of Ekiden relay in Yokohama (Giemsa, pH 7.2) 　
　 　 　 　

　

 　 At neutral pH 7.2, the red cells are stained bluish-tinted, so that ring forms and Schuffner's spots are more easily identified than the conventional Giemsa solution, pH 6.4.